{"id":1490,"date":"2025-11-12T15:15:38","date_gmt":"2025-11-12T14:15:38","guid":{"rendered":"https:\/\/eurotech-cnc.eu\/?page_id=1490"},"modified":"2025-11-12T15:15:39","modified_gmt":"2025-11-12T14:15:39","slug":"how-to-prepare-a-project-file","status":"publish","type":"page","link":"https:\/\/eurotech-cnc.eu\/en\/how-to-prepare-a-project-file\/","title":{"rendered":"Jak przygotowa\u0107 plik projektowy do obr\u00f3bki CNC \u2013 krok po kroku"},"content":{"rendered":"<p>Contemporary <a href=\"https:\/\/eurotech-cnc.eu\/en\/\">CNC machining<\/a> combines advanced technology with perfect planning.<br>However, before the detail goes to the machine, proper preparation of the design file is crucial.<br>It is the quality of the 3D and 2D documentation that determines whether the component will be produced as expected, on time and without unnecessary revisions.<\/p>\n\n\n\n<p>In this guide, Eurotech CNC experts explain step-by-step how to prepare the model correctly, what formats are recommended, what to pay attention to in construction and how to avoid mistakes that increase lead times.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Why is proper file preparation so important?<\/h2>\n\n\n\n<p>In the process <a href=\"https:\/\/eurotech-cnc.eu\/en\/cnc-milling\/\">CNC milling<\/a> every micron matters.<br>An incorrect CAD model, a lack of tolerances or an under-specified material can result:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>the need for reprogramming,<\/li>\n\n\n\n<li>Increasing lead times,<\/li>\n\n\n\n<li>and, in extreme cases, the execution of a non-conforming detail.<\/li>\n<\/ul>\n\n\n\n<p>A well-prepared design file is a guarantee of a smooth transition from the design phase to production, fewer errors and optimum manufacturing cost.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Step 1: Choose the right CAD software<\/h2>\n\n\n\n<p>The first step is to create a 3D model in CAD software (e.g. SolidWorks, Autodesk Inventor, Siemens NX, Fusion 360).<br>It is important that the builder works in an environment that allows the export of files in standard formats supported by CNC machine tools.<\/p>\n\n\n\n<p>Most commonly used formats:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>STEP (.stp, .step)<\/strong> - versatile, accurate and preferred by most machining facilities,<\/li>\n\n\n\n<li><strong>IGES (.igs)<\/strong> - older, but still useful for simple geometries,<\/li>\n\n\n\n<li><strong>Parasolid (.x_t, .x_b)<\/strong> - popular in the SolidWorks and NX environments,<\/li>\n\n\n\n<li><strong>DWG\/DXF<\/strong> - used for 2D drawings, e.g. flat parts for laser cutting.<\/li>\n<\/ul>\n\n\n\n<p>Avoid native formats (e.g. .sldprt, .ipt) if the file is to go to an external contractor - they may not be compatible with their system.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Step 2. Establish technological parameters already at the design stage<\/h2>\n\n\n\n<p>When designing a workpiece for machining, it is worth remembering that every geometry has its own technological limitations.<\/p>\n\n\n\n<p>The most common design mistakes:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>too small corner radii, which cannot be achieved with a standard cutter,<\/li>\n\n\n\n<li>walls that are too thin (less than 1 mm) and may deform,<\/li>\n\n\n\n<li>excessive pocket depths with insufficient detail stiffness,<\/li>\n\n\n\n<li>unsuitable holes for drilling tools.<\/li>\n<\/ul>\n\n\n\n<p>Practical Tip:<br>If in doubt, consult a technologist on the design - it is often possible to reduce the cost and production time by as much as 20-30% already at this stage.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Step 3: Define the material and its properties<\/h2>\n\n\n\n<p>Each material behaves differently during processing.<br>Therefore, the design file should contain unambiguous information about the material from which the detail is to be made.<\/p>\n\n\n\n<p>The most commonly used materials in precision metalworking are:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>aluminium (lightweight, easy to process and economical),<\/li>\n\n\n\n<li>structural and stainless steel,<\/li>\n\n\n\n<li>brass and copper,<\/li>\n\n\n\n<li>titanium alloys (for the aerospace and medical industries).<\/li>\n<\/ul>\n\n\n\n<p>Including this data in the documentation allows the appropriate cutting parameters, cooling and tools to be selected - which directly affects the quality and cost of the implementation.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Step 4 Prepare a 2D technical drawing<\/h2>\n\n\n\n<p>Although the 3D model is the basis of machine programming, 2D drawing still plays a key role.<br>This is where the information that is not visible in the model is placed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>dimensional tolerances,<\/li>\n\n\n\n<li>surface roughness,<\/li>\n\n\n\n<li>threads and through holes,<\/li>\n\n\n\n<li>Phase angles, radii,<\/li>\n\n\n\n<li>the required finishes (e.g. anodising, grinding, polishing).<\/li>\n<\/ul>\n\n\n\n<p>The drawing is best saved in PDF + DWG\/DXF format.<br>Such a set eliminates the risk of data misinterpretation by the CAM programme.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Step 5. Keep units and reference axes consistent<\/h2>\n\n\n\n<p>One of the most common problems when preparing a file is inconsistent units (mm\/inch) or the lack of a defined zero point.<br>Before you submit your project, make sure that:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>all dimensions are in millimetres,<\/li>\n\n\n\n<li>the model has a base point (0,0,0) at a logical location - e.g. in a corner or on a mounting plane,<\/li>\n\n\n\n<li>The X, Y and Z axes correspond to the orientation in which the workpiece will be machined.<\/li>\n<\/ul>\n\n\n\n<p>Neglecting this step is a common cause of production errors and the need for re-programming.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Step 6 Take into account the capabilities of the machine tool<\/h2>\n\n\n\n<p>Depending on the type of machine, geometry parameters may need to be adjusted.<br>For example:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>In CNC milling, the maximum pocket depth depends on the length of the cutter,<\/li>\n\n\n\n<li>In CNC turning, the diameter and length of the workpiece must be matched to the chuck and tools,<\/li>\n\n\n\n<li>in 5-axis processing, it is worth optimising the orientation to avoid collisions.<\/li>\n<\/ul>\n\n\n\n<p>Therefore, when preparing your file, it is worth consulting your contractor - Eurotech CNC's experienced technologists will be happy to advise you on how to optimise your project for their machinery.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Step 7 Verification and export<\/h2>\n\n\n\n<p>Before you send the file, carry out a final check. Check:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>completeness of the model and absence of \u201eholes\u201d in the surfaces,<\/li>\n\n\n\n<li>compliance of tolerances with the drawing,<\/li>\n\n\n\n<li>orientation and position relative to the zero point,<\/li>\n\n\n\n<li>correctness of file names (avoid Polish characters and spaces).<\/li>\n<\/ul>\n\n\n\n<p>It is good practice to include a short description or a PDF document with the information:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>number of pieces,<\/li>\n\n\n\n<li>finishing required,<\/li>\n\n\n\n<li>implementation priority (prototype \/ series).<\/li>\n<\/ul>\n\n\n\n<p>A data package prepared in this way allows programming to begin almost immediately on receipt of the documentation.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Why cooperate with Eurotech CNC already at the design stage?<\/h2>\n\n\n\n<p>Eurotech CNC's experienced technologists analyse each uploaded file for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>feasibility of the geometry,<\/li>\n\n\n\n<li>optimum selection of tools and parameters,<\/li>\n\n\n\n<li>opportunities to reduce processing times.<\/li>\n<\/ul>\n\n\n\n<p>This not only provides clients with a quote, but also technology recommendations that often translate into lower cost and better quality.<\/p>\n\n\n\n<p>Correct preparation of the design file is the first step to success in CNC machining. Well-drafted documentation minimises errors, reduces lead times and achieves maximum precision.<\/p>\n\n\n\n<p>If you want to be sure that your project will be executed flawlessly, contact <a href=\"https:\/\/eurotech-cnc.eu\/en\/\" data-type=\"link\" data-id=\"https:\/\/eurotech-cnc.eu\/\">Eurotech CNC<\/a>.<br>Upload your CAD file - the expert team will analyse it, advise on the best solutions and prepare a professional quote.<\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Wsp\u00f3\u0142czesna obr\u00f3bka CNC \u0142\u0105czy zaawansowan\u0105 technologi\u0119 z perfekcyjnym planowaniem.Zanim jednak detal trafi na maszyn\u0119, kluczowe jest odpowiednie przygotowanie pliku projektowego.To w\u0142a\u015bnie jako\u015b\u0107 dokumentacji 3D i 2D decyduje o tym, czy element zostanie wykonany zgodnie z oczekiwaniami, w terminie i bez zb\u0119dnych poprawek. W niniejszym poradniku eksperci Eurotech CNC wyja\u015bniaj\u0105 krok po kroku, jak prawid\u0142owo przygotowa\u0107 [&hellip;]<\/p>","protected":false},"author":7,"featured_media":1491,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1490","page","type-page","status-publish","has-post-thumbnail","hentry","entry","has-media"],"_links":{"self":[{"href":"https:\/\/eurotech-cnc.eu\/en\/wp-json\/wp\/v2\/pages\/1490","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/eurotech-cnc.eu\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/eurotech-cnc.eu\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/eurotech-cnc.eu\/en\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/eurotech-cnc.eu\/en\/wp-json\/wp\/v2\/comments?post=1490"}],"version-history":[{"count":2,"href":"https:\/\/eurotech-cnc.eu\/en\/wp-json\/wp\/v2\/pages\/1490\/revisions"}],"predecessor-version":[{"id":1493,"href":"https:\/\/eurotech-cnc.eu\/en\/wp-json\/wp\/v2\/pages\/1490\/revisions\/1493"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/eurotech-cnc.eu\/en\/wp-json\/wp\/v2\/media\/1491"}],"wp:attachment":[{"href":"https:\/\/eurotech-cnc.eu\/en\/wp-json\/wp\/v2\/media?parent=1490"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}