{"id":16031,"date":"2025-11-06T12:51:37","date_gmt":"2025-11-06T12:51:37","guid":{"rendered":"https:\/\/senyorapid.com\/?p=16031"},"modified":"2025-12-22T12:30:36","modified_gmt":"2025-12-22T12:30:36","slug":"a-practical-guide-to-the-surface-finish-chart","status":"publish","type":"post","link":"https:\/\/senyorapid.com\/cs\/a-practical-guide-to-the-surface-finish-chart\/","title":{"rendered":"\u00a0Praktick\u00fd pr\u016fvodce grafem povrchov\u00e9 \u00fapravy"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"16031\" class=\"elementor elementor-16031\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-782dd8c5 e-con-full e-flex e-con e-parent\" data-id=\"782dd8c5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-7f878bb4 e-con-full e-flex e-con e-child\" data-id=\"7f878bb4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1ac02713 elementor-widget elementor-widget-spacer\" data-id=\"1ac02713\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-49411d6a elementor-widget elementor-widget-heading\" data-id=\"49411d6a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">\u00a0Praktick\u00fd pr\u016fvodce grafem povrchov\u00e9 \u00fapravy<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-32521424 e-con-full e-flex e-con e-child\" data-id=\"32521424\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-1c2925a6 e-con-full e-flex e-con e-child\" data-id=\"1c2925a6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8699543 elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"8699543\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;headings_by_tags&quot;:[&quot;h2&quot;,&quot;h3&quot;],&quot;exclude_headings_by_selector&quot;:[],&quot;no_headings_message&quot;:&quot;No headings were found on this page.&quot;,&quot;marker_view&quot;:&quot;numbers&quot;,&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;hierarchical_view&quot;:&quot;yes&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t<h3 class=\"elementor-toc__header-title\">\n\t\t\t\tObsah\t\t\t<\/h3>\n\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__8699543\" aria-expanded=\"true\" aria-label=\"Abrir el \u00edndice\" data-no-translation-aria-label=\"\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__8699543\" aria-expanded=\"true\" aria-label=\"Cerrar \u00edndice\" data-no-translation-aria-label=\"\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/div>\n\t\t\t\t\t<\/div>\n\t\t<div id=\"elementor-toc__8699543\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<svg class=\"elementor-toc__spinner eicon-animation-spin e-font-icon-svg e-eicon-loading\" aria-hidden=\"true\" viewbox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M500 975V858C696 858 858 696 858 500S696 142 500 142 142 304 142 500H25C25 237 238 25 500 25S975 237 975 500 763 975 500 975Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-eef2227 e-con-full elementor-hidden-desktop elementor-hidden-tablet elementor-hidden-mobile e-flex e-con e-child\" data-id=\"eef2227\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6cdc971d elementor-widget elementor-widget-text-editor\" data-id=\"6cdc971d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>In precision engineering and industrial manufacturing, surface finish is a critical parameter. It is far more than an aesthetic quality. The texture of a component\u2019s surface can directly dictate its functionality, durability, and overall performance. Specific levels of roughness can improve fluid sealing, reduce friction, or enhance paint adhesion. For these reasons, engineers and designers must never leave surface requirements open to interpretation. If the surface texture is integral to your product\u2019s success, a clear and precise specification is mandatory.<\/p><p>This comprehensive guide provides the technical knowledge needed to master surface finish specifications. We will dissect the fundamental meaning of surface finish and explore its critical role in modern engineering. We will detail the scientific methods used to measure surface roughness accurately. You will find a detailed\u00a0<strong>surface finish chart<\/strong>, complete with standard symbols and values, designed to help you communicate your requirements effectively on technical drawings. Whether you are a design engineer, a quality control inspector, or a procurement specialist, this guide will make the\u00a0<strong>surface finish chart<\/strong>\u00a0an accessible and practical tool in your daily work. At\u00a0<strong>Senyorapid<\/strong>, we believe that a deep understanding of these principles is the first step toward superior manufacturing outcomes.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-948f133 elementor-widget elementor-widget-video\" data-id=\"948f133\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;youtube_url&quot;:&quot;https:\\\/\\\/www.youtube.com\\\/watch?v=-XU7cqjjrfo&quot;,&quot;video_type&quot;:&quot;youtube&quot;,&quot;controls&quot;:&quot;yes&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-wrapper elementor-open-inline\">\n\t\t\t<div class=\"elementor-video\"><\/div>\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-64e8bf1d elementor-widget elementor-widget-heading\" data-id=\"64e8bf1d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Defining Surface Finish: A Technical Breakdown<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-69977967 elementor-widget elementor-widget-text-editor\" data-id=\"69977967\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Before we analyze the\u00a0<strong>surface finish chart<\/strong>, we must establish a clear definition of its core concepts. In manufacturing, surface finish refers to the process of altering a part\u2019s surface. This can involve material removal, material addition, or reshaping. The result of this process is the surface texture. This texture is not a single property but a composite of three distinct characteristics: roughness, waviness, and lay.<\/p><ul><li><p><strong>Surface Roughness:<\/strong>\u00a0This is the most frequently discussed component. Roughness consists of the fine, closely spaced irregularities on a surface. These are the microscopic peaks and valleys created by the machining tool or manufacturing process. When machinists refer to \u201csurface finish,\u201d they are most often talking about surface roughness, typically quantified by the parameter Ra.<\/p><\/li><li><p><strong>Waviness:<\/strong>\u00a0This refers to the more widely spaced variations on a surface. Waviness is a longer-wavelength deviation, often caused by machine tool deflection, vibration, or heat treatment. It is the \u201cwavy\u201d aspect of a surface, upon which the finer roughness is superimposed.<\/p><\/li><li><p><strong>Lay:<\/strong>\u00a0This describes the predominant direction of the surface pattern. The lay is determined by the manufacturing method used. For example, a turning operation creates a circular or helical lay, while a milling operation produces a more linear pattern. The direction of the lay can significantly impact friction and wear in moving parts.<\/p><\/li><\/ul><p>Understanding these three components is essential for correctly interpreting a\u00a0<strong>surface finish chart<\/strong>\u00a0and specifying the exact surface characteristics a product requires.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6cf2602 elementor-widget elementor-widget-image\" data-id=\"6cf2602\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"840\" height=\"473\" src=\"https:\/\/senyorapid.com\/wp-content\/uploads\/2025\/11\/surface-finish-chart2.png\" class=\"attachment-large size-large wp-image-16037\" alt=\"surface finish chart\" srcset=\"https:\/\/senyorapid.com\/wp-content\/uploads\/2025\/11\/surface-finish-chart2.png 840w, https:\/\/senyorapid.com\/wp-content\/uploads\/2025\/11\/surface-finish-chart2-300x169.png 300w, https:\/\/senyorapid.com\/wp-content\/uploads\/2025\/11\/surface-finish-chart2-768x432.png 768w, https:\/\/senyorapid.com\/wp-content\/uploads\/2025\/11\/surface-finish-chart2-18x10.png 18w\" sizes=\"(max-width: 840px) 100vw, 840px\" title=\"\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-67fe1c6 elementor-widget elementor-widget-heading\" data-id=\"67fe1c6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">The Critical Role of Surface Finish in Engineering<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-79553fce elementor-widget elementor-widget-text-editor\" data-id=\"79553fce\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The specified surface finish on a component has profound implications for its performance, lifespan, and reliability. It is a fundamental design parameter that engineers must control to achieve consistent and high-quality products. Proper surface finish control is also a vital tool for maintaining process control in manufacturing, ensuring that each part produced meets the same high standards.<\/p><p>Here are the primary ways in which surface finish impacts product functionality:<\/p><ul><li><p><strong>Enhances Corrosion and Chemical Resistance:<\/strong>\u00a0A smoother surface has fewer microscopic peaks and valleys where corrosive agents can accumulate and initiate pitting or degradation. This makes a fine surface finish crucial for parts used in harsh chemical or environmental conditions.<\/p><\/li><li><p><strong>Provides Specific Visual Appeal:<\/strong>\u00a0For consumer products or visible components, the surface finish is a key part of the aesthetic. Finishes like brushing, polishing, or bead blasting are chosen specifically for their visual effect.<\/p><\/li><li><p><strong>Improves Adhesion for Coatings and Paints:<\/strong>\u00a0A surface cannot be too smooth or too rough for optimal adhesion. A controlled level of roughness creates an ideal \u201cprofile\u201d for paints, powder coatings, and other finishes to mechanically bond to, ensuring a durable and long-lasting coating.<\/p><\/li><li><p><strong>Eliminates Surface Defects:<\/strong>\u00a0Processes like grinding, lapping, and polishing are used to remove microscopic cracks, scratches, and other defects left by primary machining operations. This process can significantly improve a part\u2019s resistance to fatigue failure.<\/p><\/li><li><p><strong>Optimizes Electrical and Thermal Conductivity:<\/strong>\u00a0Surface roughness can affect how electrical current flows or how heat is transferred across a surface. For electrical contacts or heat sinks, a smooth, uniform finish is often required to ensure efficient performance.<\/p><\/li><li><p><strong>Reduces Friction and Increases Wear Resistance:<\/strong>\u00a0This is one of the most critical functions. In dynamic assemblies with moving parts, such as bearings, seals, and gears, a smooth surface finish minimizes friction, reduces heat generation, and dramatically extends the component\u2019s operational life.<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a635f44 elementor-widget elementor-widget-heading\" data-id=\"a635f44\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">The Impact of Manufacturing Processes on Surface Finish<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-655811aa elementor-widget elementor-widget-text-editor\" data-id=\"655811aa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The manufacturing method chosen is the single most significant factor in determining the final surface finish of a part. Each process leaves a unique topographical signature on the material\u2019s surface. Engineers must select a process capable of achieving their desired finish, as attempting to achieve a very fine finish with an inherently rough process can be inefficient and costly.\u00a0<strong>Senyorapid<\/strong>\u00a0leverages a wide array of advanced manufacturing techniques, including<span style=\"color: #3366ff;\">\u00a0<a style=\"color: #3366ff;\" href=\"https:\/\/senyorapid.com\/cs\/presne-cnc-obrabeni\/\">P\u0159esn\u00e9 obr\u00e1b\u011bn\u00ed CNC<\/a><\/span>\u00a0a\u00a0<span style=\"color: #3366ff;\"><a style=\"color: #3366ff;\" href=\"https:\/\/senyorapid.com\/cs\/aditivni-vyroba\/\">3D tisk<\/a><\/span>, to deliver the exact surface specifications required.<\/p><table><thead><tr><th>V\u00fdrobn\u00ed proces<\/th><th>Typical Ra Range (\u00b5m)<\/th><th>Typical Ra Range (\u00b5in)<\/th><th>Notes<\/th><\/tr><\/thead><tbody><tr><td>Sand Casting<\/td><td>12.5 &#8211; 25<\/td><td>500 &#8211; 1000<\/td><td>Very rough, grainy texture. Suitable for non-critical surfaces.<\/td><\/tr><tr><td><span style=\"color: #3366ff;\"><a style=\"color: #3366ff;\" href=\"https:\/\/senyorapid.com\/cs\/laserove-rezani-kovu\/\">\u0158ez\u00e1n\u00ed laserem<\/a><\/span><\/td><td>3.2 &#8211; 12.5<\/td><td>125 &#8211; 500<\/td><td>Finish varies greatly on the cut edge depending on material and settings.<\/td><\/tr><tr><td><span style=\"color: #3366ff;\"><a style=\"color: #3366ff;\" href=\"https:\/\/senyorapid.com\/cs\/hluboke-tazeni-kovu\/\">Deep Draw Stamping<\/a><\/span><\/td><td>1.6 &#8211; 6.3<\/td><td>63 &#8211; 250<\/td><td>Generally smooth but can have die marks or scratches.<\/td><\/tr><tr><td><span style=\"color: #3366ff;\"><a style=\"color: #3366ff;\" href=\"https:\/\/senyorapid.com\/cs\/sluzba-cnc-frezovani\/\">CNC fr\u00e9zov\u00e1n\u00ed<\/a><\/span><\/td><td>0.8 &#8211; 6.3<\/td><td>32 &#8211; 250<\/td><td>Highly versatile; finish depends on tool, speed, feed, and toolpath.<\/td><\/tr><tr><td><span style=\"color: #3366ff;\"><a style=\"color: #3366ff;\" href=\"https:\/\/senyorapid.com\/cs\/sluzba-cnc-soustruzeni\/\">CNC soustru\u017een\u00ed<\/a><\/span><\/td><td>0.4 &#8211; 3.2<\/td><td>16 &#8211; 125<\/td><td>Capable of very fine finishes, especially with specific tooling.<\/td><\/tr><tr><td>Brou\u0161en\u00ed<\/td><td>0.2 &#8211; 1.6<\/td><td>8 &#8211; 63<\/td><td>Produces a very smooth, precise surface by removing small amounts of material.<\/td><\/tr><tr><td>Lapping \/ Honing<\/td><td>0.05 &#8211; 0.4<\/td><td>2 &#8211; 16<\/td><td>Secondary processes used for ultra-precision finishes on flat or cylindrical parts.<\/td><\/tr><tr><td>Le\u0161t\u011bn\u00ed<\/td><td>0.025 &#8211; 0.2<\/td><td>1 &#8211; 8<\/td><td>Creates a mirror-like finish by removing microscopic imperfections.<\/td><\/tr><\/tbody><\/table><p>This table illustrates why a designer\u2019s choice of manufacturing process is directly linked to the achievable surface finish. It\u2019s impractical to specify a 0.4 \u00b5m Ra finish on a part that will only be sand-cast.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-16db758f elementor-widget elementor-widget-heading\" data-id=\"16db758f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Scientific Methods for Measuring Surface Roughness<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-28ddefbe elementor-widget elementor-widget-text-editor\" data-id=\"28ddefbe\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Accurately quantifying surface roughness requires specialized equipment. The measurement methods can be categorized into three main types: direct (contact), non-contact, and comparison methods.<\/p><ul><li><p><strong>Direct Measurement (Contact Profilometry):<\/strong>\u00a0This is the most common method. It uses an instrument called a profilometer, which has a very sensitive stylus (similar to a record player needle). The stylus is dragged across the surface at a constant speed. As it moves over the microscopic peaks and valleys, its vertical movement is recorded electronically. This data generates a 2D profile of the surface, from which roughness parameters like Ra are calculated.<\/p><\/li><li><p><strong>Non-Contact Measurement (Optical Methods):<\/strong>\u00a0These advanced methods use light or sound to measure the surface without touching it. Techniques like confocal microscopy, white light interferometry, and focus variation build a 3D map of the surface. These methods are extremely precise, fast, and non-destructive, making them ideal for delicate or highly polished surfaces. They can measure a defined area rather than just a single line.<\/p><\/li><li><p><strong>Comparison Methods:<\/strong>\u00a0This is a more practical, qualitative technique used on the shop floor. It involves using a set of surface roughness comparators\u2014small blocks of material with calibrated, pre-defined surface finishes. A machinist can use their sight and touch to compare the workpiece to the standard blocks to get a quick and reasonable assessment of the finish.<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1d4666e8 elementor-widget elementor-widget-image\" data-id=\"1d4666e8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/senyorapid.com\/wp-content\/uploads\/2025\/11\/Measuring-Surface-Roughness.jpg\" class=\"attachment-large size-large wp-image-16041\" alt=\"M\u011b\u0159en\u00ed drsnosti povrchu\" srcset=\"https:\/\/senyorapid.com\/wp-content\/uploads\/2025\/11\/Measuring-Surface-Roughness.jpg 1024w, https:\/\/senyorapid.com\/wp-content\/uploads\/2025\/11\/Measuring-Surface-Roughness-300x200.jpg 300w, https:\/\/senyorapid.com\/wp-content\/uploads\/2025\/11\/Measuring-Surface-Roughness-768x512.jpg 768w, https:\/\/senyorapid.com\/wp-content\/uploads\/2025\/11\/Measuring-Surface-Roughness-18x12.jpg 18w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" title=\"\">\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\"><\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-57d34c4d elementor-widget elementor-widget-heading\" data-id=\"57d34c4d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Specifying Surface Finish on Technical Drawings<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-38c48118 elementor-widget elementor-widget-text-editor\" data-id=\"38c48118\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Clear communication is vital in manufacturing. A universal system of symbols is used on engineering drawings to specify all aspects of the desired surface texture. The core of this system is a checkmark-style symbol.<\/p><p>The basic symbol indicates that a surface should be machined, but with no specific parameters. When numbers and other symbols are added, it becomes a precise instruction. For example, the number above the checkmark specifies the maximum Ra roughness value. Other symbols around the main checkmark can define the manufacturing process required, the sampling length, the direction of the lay, and the waviness height. Mastering these symbols ensures that the part produced by the manufacturer, such as a specialist in<span style=\"color: #3366ff;\">\u00a0<\/span><a href=\"https:\/\/senyorapid.com\/cs\/automobilove-prototypovani\/\"><span style=\"color: #3366ff;\">prototypov\u00e1n\u00ed v automobilov\u00e9m pr\u016fmyslu<\/span><\/a>\u00a0nebo<span style=\"color: #3366ff;\">\u00a0<\/span><a href=\"https:\/\/senyorapid.com\/cs\/prototypovani-zdravotnickych-prostredku\/\"><span style=\"color: #3366ff;\">prototypov\u00e1n\u00ed l\u00e9ka\u0159sk\u00fdch p\u0159\u00edstroj\u016f<\/span><\/a>, will precisely match the designer\u2019s intent.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-74e8fea1 elementor-widget elementor-widget-heading\" data-id=\"74e8fea1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Decoding the Surface Finish Chart: Key Parameters<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3f3a66bb elementor-widget elementor-widget-text-editor\" data-id=\"3f3a66bb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-slate-node=\"element\"><p>A\u00a0<strong>surface finish chart<\/strong>\u00a0typically lists several parameters. While there are many, a few are used in the vast majority of applications. Understanding these is key to interpreting technical drawings correctly.<\/p><ul><li><p><strong>Ra (Roughness Average):<\/strong>\u00a0This is the most widely used surface roughness parameter globally. It represents the arithmetic average of the absolute values of the profile\u2019s deviations from the mean line. Because it is an average, it provides a good general description of the surface texture. However, it can be insensitive to occasional high peaks or deep valleys, which could be detrimental to a part\u2019s function.<\/p><\/li><li><p><strong>Rz (Average Maximum Height of the Profile):<\/strong>\u00a0To overcome the limitations of Ra, engineers often use Rz. Rz is calculated by measuring the vertical distance from the highest peak to the lowest valley within five separate sampling lengths, and then averaging these five values. This makes Rz much more sensitive to scratches, burrs, and other outliers that Ra might miss. It is often specified for sealing surfaces or high-stress components.<\/p><\/li><li><p><strong>RMS (Root Mean Square):<\/strong>\u00a0An older parameter, RMS is still found on some drawings. It is calculated as the square root of the mean of the squares of the profile\u2019s deviations from the mean line. RMS values are typically about 11% higher than Ra values for the same surface, a key fact to remember when using a surface finish conversion chart.<\/p><\/li><\/ul><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ac06bb0 elementor-widget elementor-widget-video\" data-id=\"ac06bb0\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;youtube_url&quot;:&quot;https:\\\/\\\/www.youtube.com\\\/watch?v=3_RhwF_XW4I&quot;,&quot;video_type&quot;:&quot;youtube&quot;,&quot;controls&quot;:&quot;yes&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-wrapper elementor-open-inline\">\n\t\t\t<div class=\"elementor-video\"><\/div>\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-33bf571a elementor-widget elementor-widget-heading\" data-id=\"33bf571a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">The Comprehensive Surface Finish Chart<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-22158e8e elementor-widget elementor-widget-text-editor\" data-id=\"22158e8e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The following charts serve as essential reference tools for engineers and manufacturers. They provide a clear way to convert between different units and standards and to understand the typical applications for various roughness values.<\/p><p id=\"-surface-finish-conversion-chart-\"><strong>Surface Finish Conversion Chart<\/strong><\/p><p>This table acts as a\u00a0<strong>surface roughness comparison chart<\/strong>, allowing for easy conversion between Ra (in micrometers and microinches), RMS, and the ISO Grade Number (N).<\/p><table><thead><tr><th>Ra (\u00b5m)<\/th><th>Ra (\u00b5in)<\/th><th>RMS (\u00b5in)<\/th><th>ISO Grade (N)<\/th><th>Cut-off Length (in)<\/th><\/tr><\/thead><tbody><tr><td>50.0<\/td><td>2000<\/td><td>2200<\/td><td>N12<\/td><td>0.3<\/td><\/tr><tr><td>25.0<\/td><td>1000<\/td><td>1100<\/td><td>N11<\/td><td>0.3<\/td><\/tr><tr><td>12.5<\/td><td>500<\/td><td>550<\/td><td>N10<\/td><td>0.1<\/td><\/tr><tr><td>6.3<\/td><td>250<\/td><td>275<\/td><td>N9<\/td><td>0.1<\/td><\/tr><tr><td>3.2<\/td><td>125<\/td><td>137.5<\/td><td>N8<\/td><td>0.1<\/td><\/tr><tr><td>1.6<\/td><td>63<\/td><td>69<\/td><td>N7<\/td><td>0.03<\/td><\/tr><tr><td>0.8<\/td><td>32<\/td><td>35<\/td><td>N6<\/td><td>0.03<\/td><\/tr><tr><td>0.4<\/td><td>16<\/td><td>18<\/td><td>N5<\/td><td>0.01<\/td><\/tr><tr><td>0.2<\/td><td>8<\/td><td>9<\/td><td>N4<\/td><td>0.01<\/td><\/tr><tr><td>0.1<\/td><td>4<\/td><td>4.4<\/td><td>N3<\/td><td>0.01<\/td><\/tr><tr><td>0.05<\/td><td>2<\/td><td>2.2<\/td><td>N2<\/td><td>0.01<\/td><\/tr><tr><td>0.025<\/td><td>1<\/td><td>1.1<\/td><td>N1<\/td><td>0.003<\/td><\/tr><\/tbody><\/table><p id=\"-surface-roughness-application-guide-cheat-sheet-\"><strong>Surface Roughness Application Guide (Cheat Sheet)<\/strong><\/p><p>This practical\u00a0<strong>surface finish chart<\/strong>\u00a0links Ra values to their typical finish descriptions and common real-world applications.<\/p><table><thead><tr><th>Ra (\u00b5m)<\/th><th>Ra (\u00b5in)<\/th><th>Surface Description &amp; Common Processes<\/th><th>Typick\u00e9 aplikace<\/th><\/tr><\/thead><tbody><tr><td>25.0<\/td><td>1000<\/td><td>Extremely rough surface. Saw cutting, flame cutting, rough forging.<\/td><td>Clearance surfaces that will not be machined and have no load or contact.<\/td><\/tr><tr><td>12.5<\/td><td>500<\/td><td>Very rough machined surface. Heavy cuts from milling or turning.<\/td><td>As-cast surfaces, non-critical parts, basic prototypes.<\/td><\/tr><tr><td>6.3<\/td><td>250<\/td><td>Rough machined surface. Disc grinding, coarse milling, drilling.<\/td><td>Clearance surfaces where stress is not a major factor.<\/td><\/tr><tr><td>3.2<\/td><td>125<\/td><td>Standard rough machining. Common finish for many general-purpose parts.<\/td><td>Parts subject to moderate stress or vibration; non-mating surfaces on housings.<\/td><\/tr><tr><td>1.6<\/td><td>63<\/td><td>Good, typical machine finish. Fine feeds and controlled speeds.<\/td><td>Most common finish for non-critical mating surfaces; brackets and casings.<\/td><\/tr><tr><td><strong>0.8<\/strong><\/td><td><strong>32<\/strong><\/td><td><strong>High-grade machine finish.<\/strong>\u00a0Grinding or very fine turning\/milling.<\/td><td><strong>Precision components with moderate loads and motion, such as shafts and seals.<\/strong><\/td><\/tr><tr><td>0.4<\/td><td>16<\/td><td>Fine ground or coarse honed finish. High-quality surface.<\/td><td>Bearings, gears, and other components where smoothness is critical for low friction.<\/td><\/tr><tr><td>0.2<\/td><td>8<\/td><td>Very fine finish. Honing, lapping, or buffing.<\/td><td>High-performance hydraulic cylinders, precision sealing surfaces.<\/td><\/tr><tr><td>0.1<\/td><td>4<\/td><td>Mirror-like finish. Fine lapping or buffing.<\/td><td>Used only where required by design; precision gauges and instrument work.<\/td><\/tr><tr><td>0.05<\/td><td>2<\/td><td>Superfine mirror finish. Superfinishing or fine buffing.<\/td><td>High-precision gauge blocks, medical implants, optical components.<\/td><\/tr><tr><td>0.025<\/td><td>1<\/td><td>Ultra mirror finish. The highest level of refinement.<\/td><td>Optical lenses, aerospace-grade seals, scientific instrumentation.<\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4d3aaa7b elementor-widget elementor-widget-heading\" data-id=\"4d3aaa7b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Z\u00e1v\u011br<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4ead6126 elementor-widget elementor-widget-text-editor\" data-id=\"4ead6126\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div data-slate-node=\"element\"><p>Achieving a precise surface finish is a complex but essential aspect of modern manufacturing. It is a balancing act between performance requirements, manufacturing capabilities, and cost. A thorough understanding of surface texture, measurement techniques, and standard symbology is non-negotiable for producing reliable and functional parts. The\u00a0<strong>surface finish chart<\/strong>\u00a0is the primary tool that bridges the gap between design intent and manufacturing execution.<\/p><p>Na adrese\u00a0<strong>Senyorapid<\/strong>, we specialize in transforming complex designs into tangible, high-quality components. Our team of experts understands the nuances of surface finish standards and employs state-of-the-art processes, from<span style=\"text-decoration: underline;\"><span style=\"color: #3366ff; text-decoration: underline;\"><strong>\u00a0<\/strong><\/span><\/span><a href=\"https:\/\/senyorapid.com\/cs\/rychle-vstrikovani\/\"><span style=\"text-decoration: underline;\"><span style=\"color: #3366ff; text-decoration: underline;\"><strong>rychl\u00e9 vst\u0159ikov\u00e1n\u00ed<\/strong><\/span><\/span><\/a>\u00a0to precision grinding, to meet the most exacting specifications. We provide full dimensional and surface inspection reports to guarantee that the parts you receive conform perfectly to your drawings. 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data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-63f0a8e1 elementor-widget elementor-widget-heading\" data-id=\"63f0a8e1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Nejnov\u011bj\u0161\u00ed p\u0159\u00edsp\u011bvky<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1ccd5dff elementor-grid-1 elementor-grid-tablet-2 elementor-grid-mobile-1 elementor-posts--thumbnail-top elementor-widget elementor-widget-posts\" data-id=\"1ccd5dff\" data-element_type=\"widget\" data-e-type=\"widget\" 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>\n\t\t\t<div class=\"elementor-post__thumbnail\"><img decoding=\"async\" width=\"300\" height=\"178\" src=\"https:\/\/senyorapid.com\/wp-content\/uploads\/2026\/05\/undercut-design-300x178.jpg\" class=\"attachment-medium size-medium wp-image-17043\" alt=\"undercut design\" title=\"\" srcset=\"https:\/\/senyorapid.com\/wp-content\/uploads\/2026\/05\/undercut-design-300x178.jpg 300w, https:\/\/senyorapid.com\/wp-content\/uploads\/2026\/05\/undercut-design-1024x607.jpg 1024w, https:\/\/senyorapid.com\/wp-content\/uploads\/2026\/05\/undercut-design-768x455.jpg 768w, https:\/\/senyorapid.com\/wp-content\/uploads\/2026\/05\/undercut-design-1536x910.jpg 1536w, https:\/\/senyorapid.com\/wp-content\/uploads\/2026\/05\/undercut-design-2048x1214.jpg 2048w, https:\/\/senyorapid.com\/wp-content\/uploads\/2026\/05\/undercut-design-18x12.jpg 18w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/div>\n\t\t<\/a>\n\t\t\t\t<div class=\"elementor-post__text\">\n\t\t\t\t<h4 class=\"elementor-post__title\">\n\t\t\t<a href=\"https:\/\/senyorapid.com\/cs\/undercut-design\/\" >\n\t\t\t\tUndercut Design: The Guide for Plastic Injection Molding\t\t\t<\/a>\n\t\t<\/h4>\n\t\t\t\t<div class=\"elementor-post__meta-data\">\n\t\t\t\t\t<span class=\"elementor-post-date\">\n\t\t\t20 kv\u011btna, 2026\t\t<\/span>\n\t\t\t\t<\/div>\n\t\t\n\t\t<a class=\"elementor-post__read-more\" href=\"https:\/\/senyorapid.com\/cs\/undercut-design\/\" aria-label=\"Read more about Undercut Design: The Guide for Plastic Injection Molding\" tabindex=\"-1\" >\n\t\t\tP\u0159e\u010dt\u011bte si v\u00edce \"\t\t<\/a>\n\n\t\t\t\t<\/div>\n\t\t\t\t<\/article>\n\t\t\t\t<\/div>\n\t\t\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5b441407 elementor-widget elementor-widget-heading\" data-id=\"5b441407\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/senyorapid.com\/cs\/nejlepsi-cnc-obrabeni\/\" target=\"_blank\">CNC obr\u00e1b\u011bn\u00ed<\/a><\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-12c6ab41 elementor-align-start elementor-widget__width-initial elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"12c6ab41\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/senyorapid.com\/cs\/sluzba-cnc-frezovani\/\" target=\"_blank\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-arrow-alt-circle-right\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M504 256C504 119 393 8 256 8S8 119 8 256s111 248 248 248 248-111 248-248zm-448 0c0-110.5 89.5-200 200-200s200 89.5 200 200-89.5 200-200 200S56 366.5 56 256zm72 20v-40c0-6.6 5.4-12 12-12h116v-67c0-10.7 12.9-16 20.5-8.5l99 99c4.7 4.7 4.7 12.3 0 17l-99 99c-7.6 7.6-20.5 2.2-20.5-8.5v-67H140c-6.6 0-12-5.4-12-12z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">CNC fr\u00e9zov\u00e1n\u00ed<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/senyorapid.com\/cs\/sluzba-cnc-soustruzeni\/\" target=\"_blank\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-arrow-alt-circle-right\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M504 256C504 119 393 8 256 8S8 119 8 256s111 248 248 248 248-111 248-248zm-448 0c0-110.5 89.5-200 200-200s200 89.5 200 200-89.5 200-200 200S56 366.5 56 256zm72 20v-40c0-6.6 5.4-12 12-12h116v-67c0-10.7 12.9-16 20.5-8.5l99 99c4.7 4.7 4.7 12.3 0 17l-99 99c-7.6 7.6-20.5 2.2-20.5-8.5v-67H140c-6.6 0-12-5.4-12-12z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">CNC soustru\u017een\u00ed<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/senyorapid.com\/cs\/presne-cnc-obrabeni\/\" target=\"_blank\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-arrow-alt-circle-right\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M504 256C504 119 393 8 256 8S8 119 8 256s111 248 248 248 248-111 248-248zm-448 0c0-110.5 89.5-200 200-200s200 89.5 200 200-89.5 200-200 200S56 366.5 56 256zm72 20v-40c0-6.6 5.4-12 12-12h116v-67c0-10.7 12.9-16 20.5-8.5l99 99c4.7 4.7 4.7 12.3 0 17l-99 99c-7.6 7.6-20.5 2.2-20.5-8.5v-67H140c-6.6 0-12-5.4-12-12z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">P\u0159esn\u00e9 obr\u00e1b\u011bn\u00ed<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/senyorapid.com\/cs\/sluzba-edm-obrabeni\/\" target=\"_blank\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-arrow-alt-circle-right\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M504 256C504 119 393 8 256 8S8 119 8 256s111 248 248 248 248-111 248-248zm-448 0c0-110.5 89.5-200 200-200s200 89.5 200 200-89.5 200-200 200S56 366.5 56 256zm72 20v-40c0-6.6 5.4-12 12-12h116v-67c0-10.7 12.9-16 20.5-8.5l99 99c4.7 4.7 4.7 12.3 0 17l-99 99c-7.6 7.6-20.5 2.2-20.5-8.5v-67H140c-6.6 0-12-5.4-12-12z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Dr\u00e1tov\u00e9 elektroerozivn\u00ed obr\u00e1b\u011bn\u00ed<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-310e76e elementor-widget elementor-widget-heading\" data-id=\"310e76e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/senyorapid.com\/cs\/prototypove-vstrikovani-plastu\/\" target=\"_blank\">Vst\u0159ikov\u00e1n\u00ed<\/a><\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-638f3e42 elementor-align-start elementor-widget__width-initial elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"638f3e42\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/senyorapid.com\/cs\/rychle-vstrikovani\/\" target=\"_blank\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-arrow-alt-circle-right\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M504 256C504 119 393 8 256 8S8 119 8 256s111 248 248 248 248-111 248-248zm-448 0c0-110.5 89.5-200 200-200s200 89.5 200 200-89.5 200-200 200S56 366.5 56 256zm72 20v-40c0-6.6 5.4-12 12-12h116v-67c0-10.7 12.9-16 20.5-8.5l99 99c4.7 4.7 4.7 12.3 0 17l-99 99c-7.6 7.6-20.5 2.2-20.5-8.5v-67H140c-6.6 0-12-5.4-12-12z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Vst\u0159ikov\u00e1n\u00ed prototyp\u016f<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/senyorapid.com\/cs\/sluzba-vakuoveho-levani\/\" target=\"_blank\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-arrow-alt-circle-right\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M504 256C504 119 393 8 256 8S8 119 8 256s111 248 248 248 248-111 248-248zm-448 0c0-110.5 89.5-200 200-200s200 89.5 200 200-89.5 200-200 200S56 366.5 56 256zm72 20v-40c0-6.6 5.4-12 12-12h116v-67c0-10.7 12.9-16 20.5-8.5l99 99c4.7 4.7 4.7 12.3 0 17l-99 99c-7.6 7.6-20.5 2.2-20.5-8.5v-67H140c-6.6 0-12-5.4-12-12z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Slu\u017eba vakuov\u00e9ho lit\u00ed<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/senyorapid.com\/cs\/zastrikovani-a-vstrikovani-s-vlozkou\/\" target=\"_blank\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-arrow-alt-circle-right\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M504 256C504 119 393 8 256 8S8 119 8 256s111 248 248 248 248-111 248-248zm-448 0c0-110.5 89.5-200 200-200s200 89.5 200 200-89.5 200-200 200S56 366.5 56 256zm72 20v-40c0-6.6 5.4-12 12-12h116v-67c0-10.7 12.9-16 20.5-8.5l99 99c4.7 4.7 4.7 12.3 0 17l-99 99c-7.6 7.6-20.5 2.2-20.5-8.5v-67H140c-6.6 0-12-5.4-12-12z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">P\u0159ekr\u00fdv\u00e1n\u00ed a vkl\u00e1d\u00e1n\u00ed v\u00fdlisk\u016f<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/senyorapid.com\/cs\/vicenasobne-vstrikovani\/\" target=\"_blank\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-arrow-alt-circle-right\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M504 256C504 119 393 8 256 8S8 119 8 256s111 248 248 248 248-111 248-248zm-448 0c0-110.5 89.5-200 200-200s200 89.5 200 200-89.5 200-200 200S56 366.5 56 256zm72 20v-40c0-6.6 5.4-12 12-12h116v-67c0-10.7 12.9-16 20.5-8.5l99 99c4.7 4.7 4.7 12.3 0 17l-99 99c-7.6 7.6-20.5 2.2-20.5-8.5v-67H140c-6.6 0-12-5.4-12-12z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Vst\u0159ikov\u00e1n\u00ed do v\u00edce dutin<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/senyorapid.com\/cs\/nastroje-pro-vstrikovani\/\" target=\"_blank\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-arrow-alt-circle-right\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M504 256C504 119 393 8 256 8S8 119 8 256s111 248 248 248 248-111 248-248zm-448 0c0-110.5 89.5-200 200-200s200 89.5 200 200-89.5 200-200 200S56 366.5 56 256zm72 20v-40c0-6.6 5.4-12 12-12h116v-67c0-10.7 12.9-16 20.5-8.5l99 99c4.7 4.7 4.7 12.3 0 17l-99 99c-7.6 7.6-20.5 2.2-20.5-8.5v-67H140c-6.6 0-12-5.4-12-12z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">N\u00e1stroje pro vst\u0159ikov\u00e1n\u00ed plast\u016f<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b76b6d3 elementor-widget elementor-widget-heading\" data-id=\"b76b6d3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/senyorapid.com\/cs\/presne-zpracovani-plechu\/\" target=\"_blank\">V\u00fdroba plech\u016f<\/a><\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-69016190 elementor-align-start elementor-widget__width-initial elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"69016190\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/senyorapid.com\/cs\/sluzba-ohyba-kovu\/\" target=\"_blank\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-arrow-alt-circle-right\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M504 256C504 119 393 8 256 8S8 119 8 256s111 248 248 248 248-111 248-248zm-448 0c0-110.5 89.5-200 200-200s200 89.5 200 200-89.5 200-200 200S56 366.5 56 256zm72 20v-40c0-6.6 5.4-12 12-12h116v-67c0-10.7 12.9-16 20.5-8.5l99 99c4.7 4.7 4.7 12.3 0 17l-99 99c-7.6 7.6-20.5 2.2-20.5-8.5v-67H140c-6.6 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kreslen\u00ed<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-78092d50 elementor-widget elementor-widget-heading\" data-id=\"78092d50\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/senyorapid.com\/cs\/aditivni-vyroba\/\" target=\"_blank\">Slu\u017eba 3D tisku<\/a><\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6d8fc1d elementor-widget__width-initial e-transform elementor-hidden-tablet elementor-hidden-mobile elementor-widget elementor-widget-wpforms\" data-id=\"6d8fc1d\" data-element_type=\"widget\" data-e-type=\"widget\" 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name=\"wpforms[submit]\" id=\"wpforms-submit-12215\" class=\"wpforms-submit\" data-alt-text=\"Sending...\" data-submit-text=\"Submit\" aria-live=\"assertive\" value=\"wpforms-submit\">Odeslat<\/button><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/senyorapid.com\/wp-content\/plugins\/wpforms\/assets\/images\/submit-spin.svg\" class=\"wpforms-submit-spinner\" style=\"display: none;\" width=\"26\" height=\"26\" alt=\"Na\u010d\u00edt\u00e1n\u00ed\" title=\"\"><\/div><input type=\"hidden\" name=\"trp-form-language\" value=\"cs\"\/><\/form><\/div>  <!-- .wpforms-container -->\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-18158226 e-flex e-con-boxed e-con e-parent\" data-id=\"18158226\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-813ca40 elementor-widget elementor-widget-spacer\" data-id=\"813ca40\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2a03139c elementor-widget elementor-widget-heading\" data-id=\"2a03139c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Souvisej\u00edc\u00ed blogy<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-58c28d5a elementor-widget elementor-widget-text-editor\" data-id=\"58c28d5a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Blog spole\u010dnosti Senyo je zam\u011b\u0159en na sd\u00edlen\u00ed na\u0161ich rozs\u00e1hl\u00fdch znalost\u00ed o v\u00fdrob\u011b prototyp\u016f. Prost\u0159ednictv\u00edm na\u0161ich \u010dl\u00e1nk\u016f v\u00e1s chceme podpo\u0159it p\u0159i zdokonalov\u00e1n\u00ed designu va\u0161ich v\u00fdrobk\u016f a efektivn\u011bj\u0161\u00ed orientaci ve slo\u017eitostech rychl\u00e9 v\u00fdroby prototyp\u016f.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e0facc3 elementor-grid-3 elementor-grid-tablet-2 elementor-grid-mobile-1 elementor-posts--thumbnail-top elementor-widget elementor-widget-posts\" data-id=\"e0facc3\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;pagination_type&quot;:&quot;numbers_and_prev_next&quot;,&quot;classic_columns&quot;:&quot;3&quot;,&quot;classic_columns_tablet&quot;:&quot;2&quot;,&quot;classic_columns_mobile&quot;:&quot;1&quot;,&quot;classic_row_gap&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:35,&quot;sizes&quot;:[]},&quot;classic_row_gap_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;classic_row_gap_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"posts.classic\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-posts-container elementor-posts elementor-posts--skin-classic elementor-grid\">\n\t\t\t\t<article class=\"elementor-post elementor-grid-item post-14280 post type-post status-publish format-standard has-post-thumbnail hentry category-blog\">\n\t\t\t\t<a class=\"elementor-post__thumbnail__link\" 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href=\"https:\/\/senyorapid.com\/cs\/wp-json\/wp\/v2\/posts\/16031\/page\/2\/\">Dal\u0161\u00ed \"<\/a>\t\t<\/nav>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bb03832 elementor-widget elementor-widget-spacer\" data-id=\"bb03832\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>\u00a0A Practical Guide to the Surface Finish Chart Table of Contents In precision engineering and industrial manufacturing, surface finish is a critical parameter. 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