{"id":458,"date":"2022-05-04T04:20:45","date_gmt":"2022-05-04T04:20:45","guid":{"rendered":"https:\/\/unionline24.co.za\/apps\/?p=458"},"modified":"2022-05-04T04:20:47","modified_gmt":"2022-05-04T04:20:47","slug":"freecad","status":"publish","type":"post","link":"https:\/\/unionline24.co.za\/apps\/freecad\/","title":{"rendered":"FreeCAD"},"content":{"rendered":"<div class=\"3b0f01c982c849478b934f73fd22ce2a\" data-index=\"1\" style=\"float: none; margin:0px 0 0px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-2361696526152498\"\r\n     crossorigin=\"anonymous\"><\/script>\r\n<!-- apps responsive ads -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-client=\"ca-pub-2361696526152498\"\r\n     data-ad-slot=\"4647471924\"\r\n     data-ad-format=\"auto\"\r\n     data-full-width-responsive=\"true\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n\n<p>FreeCAD&nbsp;is a 3D parametric modeling program designed for creating and customizing real-life objects. It\u2019s completely free and open-source. <\/p>\n\n\n\n<p>FreeCAD&nbsp;is organized in Workbenches, which provide different layouts of tools depending on the task at hand. This means you can do a lot with the same program, such as drafting, modeling, or assembling.<\/p>\n\n\n\n<p>In this tutorial, we\u2019ll model a simple storage chest, which can be 3D printed later on or left as a model. We\u2019ll go over how the program is organized, how to use each of the necessary tools, as well as some advice in case you want to take the next step and 3D print it.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_31_1 ez-toc-wrap-left counter-hierarchy counter-numeric ez-toc-white\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" style=\"display: none;\"><label for=\"item\" aria-label=\"Table of Content\"><i class=\"ez-toc-glyphicon ez-toc-icon-toggle\"><\/i><\/label><input type=\"checkbox\" id=\"item\"><\/a><\/span><\/div>\n<nav><ul class=\"ez-toc-list ez-toc-list-level-1\"><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/unionline24.co.za\/apps\/freecad\/#Step_1_Setting_Up\" title=\"Step 1: Setting Up\">Step 1: Setting Up<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/unionline24.co.za\/apps\/freecad\/#Navigation_Style\" title=\"Navigation Style\">Navigation Style<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/unionline24.co.za\/apps\/freecad\/#Units\" title=\"Units\">Units<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/unionline24.co.za\/apps\/freecad\/#Workbenches\" title=\"Workbenches\">Workbenches<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/unionline24.co.za\/apps\/freecad\/#Step_2_Sketching_a_Base\" title=\"Step 2: Sketching a Base\">Step 2: Sketching a Base<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/unionline24.co.za\/apps\/freecad\/#Sketching_Tools\" title=\"Sketching Tools\">Sketching Tools<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/unionline24.co.za\/apps\/freecad\/#Drawing_the_Sketch\" title=\"Drawing the Sketch\">Drawing the Sketch<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/unionline24.co.za\/apps\/freecad\/#Step_3_Extruding_a_Boss\" title=\"Step 3: Extruding a Boss\">Step 3: Extruding a Boss<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/unionline24.co.za\/apps\/freecad\/#Step_4_Creating_the_Hollow_Box\" title=\"Step 4: Creating the Hollow Box\">Step 4: Creating the Hollow Box<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/unionline24.co.za\/apps\/freecad\/#Unifying_Solids\" title=\"Unifying Solids\">Unifying Solids<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/unionline24.co.za\/apps\/freecad\/#Step_5_Adding_a_Lid_Slot\" title=\"Step 5: Adding a Lid Slot\">Step 5: Adding a Lid Slot<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/unionline24.co.za\/apps\/freecad\/#Creating_New_Reference_Geometries\" title=\"Creating New Reference Geometries\">Creating New Reference Geometries<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/unionline24.co.za\/apps\/freecad\/#Extruding_a_Cut\" title=\"Extruding a Cut\">Extruding a Cut<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/unionline24.co.za\/apps\/freecad\/#Step_7_Creating_the_Cover\" title=\"Step 7: Creating the Cover\">Step 7: Creating the Cover<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/unionline24.co.za\/apps\/freecad\/#Using_Constraints\" title=\"Using Constraints\">Using Constraints<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/unionline24.co.za\/apps\/freecad\/#Trimming\" title=\"Trimming\">Trimming<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/unionline24.co.za\/apps\/freecad\/#Extruding_the_Cover\" title=\"Extruding the Cover\">Extruding the Cover<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/unionline24.co.za\/apps\/freecad\/#Step_8_Adding_Details_to_the_Cover\" title=\"Step 8: Adding Details to the Cover\">Step 8: Adding Details to the Cover<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/unionline24.co.za\/apps\/freecad\/#Advice_Considerations\" title=\"Advice &amp; Considerations\">Advice &amp; Considerations<\/a><\/li><\/ul><\/nav><\/div>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_1_Setting_Up\"><\/span>Step 1: Setting Up<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i.all3dp.com\/workers\/images\/fit=cover,w=360,gravity=0.5x0.5,format=auto\/wp-content\/uploads\/2021\/11\/02155819\/a-good-initial-set-up-makes-the-process-more-fluid-lauren-fuentes-via-all3dp-211029_download.jpg\" alt=\"A good initial setup makes the process more fluid\"\/><figcaption>A good initial setup makes the process more fluid (Source: Lauren Fuentes via All3DP)<\/figcaption><\/figure>\n\n\n\n<p>Downloading FreeCAD is very simple, you don\u2019t need to register or take many steps. Simply go to the&nbsp;<a href=\"https:\/\/www.freecadweb.org\/downloads.php\" target=\"_blank\" rel=\"noreferrer noopener\">download page<\/a>&nbsp;of the FreeCAD site and click the download button. FreeCAD works for Linux, MacOS, and Windows, so select your OS accordingly.<\/p>\n\n\n\n<p>Once the program is downloaded, there are a few things to set up and familiarize yourself with before starting a new design.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Navigation_Style\"><\/span><strong>Navigation Style<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>In FreeCAD, you can set the navigation style in a few different ways, with setups that resemble other programs in terms of hotkeys and the layout.<\/p>\n\n\n\n<p>To set the navigation style, right-click anywhere on the workspace and go to \u201cNavigation Style\u201d (#1 in the image above). There, you\u2019ll see many options. As we\u2019ll be creating a model using CAD, the best option is to leave it as such.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Units\"><\/span><strong>Units<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Units affect your project when you use dimensions and also when drawing, and they ultimately depend on the project you\u2019re doing (or your personal preference).<\/p>\n\n\n\n<p>To check the units, go to Edit, on the top menu, then \u201cPreferences &gt; General &gt; Units\u201d (2). In this case, we\u2019ll use the metric system in mm, and if you\u2019re modeling to 3D print, we recommend you do the same, as slicing programs usually work in the same system.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Workbenches\"><\/span><strong>Workbenches<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Finally, as we mentioned, FreeCAD is organized in Workbenches. As we\u2019ll be modeling, we\u2019ll be switching between the \u201cPart Design\u201d workbench and the \u201cPart\u201d workbench.<\/p>\n\n\n\n<p>To switch workbenches, go to the workbench menu at the top of the toolbar (3). When you switch workbenches, you\u2019ll see the tools in the toolbar change.<\/p>\n\n\n\n<p>It\u2019s also possible to customize the position of the tools by dragging and dropping them. We recommend moving them so that you can see all tools at the same time, as some will be stacked to the right of the screen and hidden.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_2_Sketching_a_Base\"><\/span>Step 2: Sketching a Base<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i.all3dp.com\/workers\/images\/fit=cover,w=360,gravity=0.5x0.5,format=auto\/wp-content\/uploads\/2021\/11\/02155824\/to-create-a-solid-first-we-need-to-create-a-sketch-lauren-fuentes-via-all3dp-211029_download.jpg\" alt=\"To create a solid first we need to create a sketch\"\/><figcaption>To create a solid, first we need to create a sketch (Source: Lauren Fuentes via All3DP)<\/figcaption><\/figure>\n\n\n\n<p>We\u2019ll start by modeling the bottom part of the chest. For our example, we\u2019ll give you all the measurements, but if you\u2019re creating something of your own that you plan to print, take care that the dimensions you set at this point will fit on your printer\u2019s&nbsp;build plate.<\/p>\n\n\n\n<p>To model the bottom of the chest, we\u2019ll essentially model a hollow box without a lid (the lid comes later). To start, go to the \u201cPart Design\u201d workbench, where we find the sketching tools.<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>To sketch a base, under the Combo View box to the left of the Viewport, go to the Tasks tab and you\u2019ll see the option to create a body.<\/li><li>Click \u201cCreate sketch\u201d, and FreeCAD will ask you to select a plane in which you want to design your model. Although this is a 3D model and you can rotate it around, it\u2019s good practice to choose the plane according to how you\u2019re going to design the part.<\/li><li>We\u2019ll select the XY-plane, which is viewed from above, as we\u2019ll be drawing the bottom part of the chest. Select this plane and press \u201cOK\u201d.<\/li><\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Sketching_Tools\"><\/span><strong>Sketching Tools<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i.all3dp.com\/workers\/images\/fit=cover,w=360,gravity=0.5x0.5,format=auto\/wp-content\/uploads\/2021\/11\/02155830\/sketch-tools-help-you-draw-a-2d-shape-lauren-fuentes-via-all3dp-211029_download.jpg\" alt=\"Sketch tools help you draw a 2D shape\"\/><figcaption>Sketch tools help you draw a 2D shape<\/figcaption><\/figure>\n\n\n\n<p>As FreeCAD is parametric modeling software, you sketch by using drawing tools (1) and constraint tools (2). To make sketching easier, you can enable the grid (3).<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>To show the grid, go to the Combo View in the Tasks tab.<\/li><li>There, there\u2019s a drop-down menu called \u201cEdit Controls\u201d where you can choose to show the grid, change its size, and activate grid snapping.<\/li><li>In this case, we\u2019ll set the grid spacing to 5 mm, as we\u2019ll be working with around 100 mm on each side, so 5 mm is a good incremental space.&nbsp;If you\u2019re designing a smaller model, you might prefer to choose smaller increments (e.g. a 10 x 10 mm model would work well with 1 mm spacing).<\/li><\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Drawing_the_Sketch\"><\/span><strong>Drawing the Sketch<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i.all3dp.com\/workers\/images\/fit=cover,w=360,gravity=0.5x0.5,format=auto\/wp-content\/uploads\/2021\/11\/02155835\/constraints-are-necessary-tools-for-parametric-mod-lauren-fuentes-via-all3dp-211029_download.jpg\" alt=\"Constraints are necessary tools for parametric modeling\"\/><figcaption>Constraints are necessary tools for parametric modeling <\/figcaption><\/figure>\n\n\n\n<p>To sketch the chest bottom, we\u2019ll start by drawing a base rectangle.<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>The red dot on the center of the screen (1) is the origin point, so coordinate systems in reference to the origin point work from there.<\/li><li>We\u2019ll draw an 80 x 60 mm rectangle parting from the origin. You can see the coordinates as you move, which will help you draw.<\/li><li>When you\u2019re done, you\u2019ll see small straight red lines inside the rectangle edges (2). These are constraint lines and they indicate the lines are horizontal and vertical.<\/li><li>The sketch is done for now, so we can close it.<\/li><\/ol>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_3_Extruding_a_Boss\"><\/span>Step 3: Extruding a Boss<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i.all3dp.com\/workers\/images\/fit=cover,w=360,gravity=0.5x0.5,format=auto\/wp-content\/uploads\/2021\/11\/02155840\/use-extruding-to-make-2d-shapes-into-3d-volumes-lauren-fuentes-via-all3dp-211029_download.jpg\" alt=\"Use extruding to make 2D shapes into 3D volumes\"\/><figcaption>Use the Extrude tools to make 2D shapes into 3D volumes <\/figcaption><\/figure>\n\n\n\n<p>For now, the rectangle we have is a 2D shape, and we need to give it some height so it becomes a 3D shape and can form the base of our box.<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>With the sketch closed, go to the Combo View in the Model tab, and you\u2019ll see there\u2019s now a sketch on the hierarchy tree. Select the sketch by clicking on it once. (To edit an existing sketch, double click it and you\u2019ll go back into sketch mode.)<\/li><li>Go to the Part workbench. Here, you have the option to \u201cExtrude from a selected sketch\u201d (1).<\/li><li>In the Tasks tab, you can then set properties including the length of the extrusion, which we\u2019ll set to 5 mm.<\/li><li>Press OK. This will apply the changes and take you out of extrusion mode.<\/li><\/ol>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_4_Creating_the_Hollow_Box\"><\/span>Step 4: Creating the Hollow Box<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i.all3dp.com\/workers\/images\/fit=cover,w=360,gravity=0.5x0.5,format=auto\/wp-content\/uploads\/2021\/11\/02155846\/now-the-chest-will-have-walls-to-contain-objects-lauren-fuentes-via-all3dp-211029_download.jpg\" alt=\"Now the chest will have walls to contain objects\"\/><figcaption>Now the chest will have walls to contain objects<\/figcaption><\/figure>\n\n\n\n<p>Now that we\u2019re working in 3D, we can convert our flat model into a hollow box shape.<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>To create the walls of the chest, go back to \u201cPart Design\u201d, select the body, and in the Tasks tab create a new sketch.<\/li><li>In this sketch, we\u2019ll create two rectangles. One that\u2019s the same size as the first rectangle, and a second rectangle that fits 5 mm inside the first one. This means that the walls of the chest will have a thickness of 5 mm.<\/li><li>Select this sketch, go back to \u201cPart\u201d, and extrude the base to a length of 60 mm by repeating the instructions in step 3, above.<\/li><\/ol>\n\n\n\n<p>If you\u2019re designing your own model to 3D print, be careful about the wall thickness you choose at this stage. Walls that are too thin may not even be printable or could end up too brittle for practical use. Also be aware that the height you extrude to shouldn\u2019t exceed the build volume of your printer.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Unifying_Solids\"><\/span><strong>Unifying Solids<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i.all3dp.com\/workers\/images\/fit=cover,w=360,gravity=0.5x0.5,format=auto\/wp-content\/uploads\/2021\/11\/02155850\/use-boolean-operation-to-unify-or-substract-bodies-lauren-fuentes-via-all3dp-211029_download.jpg\" alt=\"Use boolean operation to unify or substract bodies\"\/><figcaption>Use Boolean operations to unify or substract bodies<\/figcaption><\/figure>\n\n\n\n<p>At this stage, the bottom and the walls look like separate shapes because (from the perspective of the software) they\u2019re still different bodies. This won\u2019t necessarily affect the printability of a part, but when modeling, it can have important implications. To fix this, FreeCAD has to go a bit of the longer route as there isn\u2019t an option to directly create features inside the same body.<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>Select the two bodies on the model tree, and from the Boolean operations select \u201cUnion\u201d. Now they will be the same part and it won\u2019t look as if they overlap, but you may still see the separate lines as if they were two bodies.<\/li><li>To make those lines disappear, select the Fusion element in the Model tree, which is our combined model. In the properties, change the Refine option to \u201ctrue\u201d. Now the program shows and interprets it as one combined shape.<\/li><\/ol>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_5_Adding_a_Lid_Slot\"><\/span>Step 5: Adding a Lid Slot<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i.all3dp.com\/workers\/images\/fit=cover,w=360,gravity=0.5x0.5,format=auto\/wp-content\/uploads\/2021\/11\/02155854\/to-create-sketches-in-different-positions-you-need-lauren-fuentes-via-all3dp-211029_download.jpg\" alt=\"To create sketches in different positions you need reference geometries\"\/><figcaption>To create sketches in different positions you need reference geometries<\/figcaption><\/figure>\n\n\n\n<p>Now we need to make the slot where the cover will fit. For this, we\u2019ll be modifying the top of the model, so we need to create a new reference plane in that area.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Creating_New_Reference_Geometries\"><\/span><strong>Creating New Reference Geometries<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>In FreeCAD, reference planes are called \u201cDatum planes\u201d (1) and you can find them in the Part Design workbench.<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>Select the top face (2) and set it as a datum plane. In this case, we don\u2019t need any more references, so don\u2019t select anything else.<\/li><li>Set all offsets to zero, so the datum plane is touching the top face.<\/li><\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Extruding_a_Cut\"><\/span><strong>Extruding a Cut<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>To cut into a body in FreeCAD, you extrude a shape and then use Boolean operations to subtract that shape from another body.<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>Select the first body, go to Tasks, and create a new sketch. When FreeCAD asks you to select a plane, select the newly created datum plane.<\/li><li>We want to make a slot for the lid of the chest, so draw a rectangle on the datum plane along one of the long walls, leaving 5 mm at each end.<\/li><li>Go to the \u201cPart\u201d workbench and extrude the new rectangle 5 mm down. At this point, we\u2019ll have two shapes, our chest base, and the rectangular prism on top.<\/li><li>Select both bodies and use the Boolean operation \u201cDifference\u201d to subtract the rectangular prism from the chest.<\/li><li>On the \u201cCut\u201d feature that appears on the model tree, make sure \u201cRefine\u201d is set to true.<\/li><\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_7_Creating_the_Cover\"><\/span>Step 7: Creating the Cover<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i.all3dp.com\/workers\/images\/fit=cover,w=360,gravity=0.5x0.5,format=auto\/wp-content\/uploads\/2021\/11\/02155909\/this-is-the-first-operation-needed-to-complete-the-lauren-fuentes-via-all3dp-211029_download.jpg\" alt=\"This is the first operation needed to complete the cover!\"\/><figcaption>This is the first operation needed to complete the cover <\/figcaption><\/figure>\n\n\n\n<p>To create the cover, we\u2019ll create a new part.<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>Using what we\u2019ve learned so far, create a hollow rectangle on the XY-plane and extrude it to be 5 mm high. The outside rectangle will be 80 x 60 mm and the inside will be 70 x 50 mm (5 mm smaller in all directions) to match the chest. You can see the result in the image above.<\/li><li>Select one of the shorter side faces and create a new datum plane there.<\/li><\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Using_Constraints\"><\/span><strong>Using Constraints<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i.all3dp.com\/workers\/images\/fit=cover,w=360,gravity=0.5x0.5,format=auto\/wp-content\/uploads\/2021\/11\/02155915\/use-constraint-to-create-two-semi-circles-lauren-fuentes-via-all3dp-211029_download-e1636123371860.jpg\" alt=\"Use constraints to create two semi-circles\"\/><figcaption>With constraints you can match lines and shapes to each other <\/figcaption><\/figure>\n\n\n\n<p>We\u2019re now going to create a circle to give the cover a round shape. The steps described at this stage can be seen completed in the image above, so you know what you\u2019re aiming for.<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>Select the midpoint 10 mm below the bottom of the solid (30 mm from each side) and make a circle of any radius.<\/li><li>Add a point in the top right corner of the rectangle. We\u2019ll use a constraint that fixes a point to an object. This will make the radius of the circle be coincident, which makes it snap to the corner of the rectangle.<\/li><li>Create a second circle from the same point to give thickness to the cover.<\/li><li>Add another point inside the cover, touch the inside wall, and use a constraint to make the second circle snap to this point.<\/li><\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Trimming\"><\/span><strong>Trimming<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i.all3dp.com\/workers\/images\/fit=cover,w=360,gravity=0.5x0.5,format=auto\/wp-content\/uploads\/2021\/11\/02155919\/trimming-tool-is-an-effective-way-to-delete-excess-lauren-fuentes-via-all3dp-211029_download.jpg\" alt=\"Trimming tool is an effective way to delete excess lines\"\/><figcaption>The trimming tool is an effective way to delete excess lines <\/figcaption><\/figure>\n\n\n\n<ol class=\"wp-block-list\"><li>To limit the extension of the circle, as we only need a portion of it, we\u2019ll simply draw lines where the circle needs to stop (1). As seen above, this corresponds to the bottom and left-hand edges of the visible rectangle.<\/li><li>To trim the rest of the circle we\u2019ll use the trim tool (2).<\/li><\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Extruding_the_Cover\"><\/span><strong>Extruding the Cover<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i.all3dp.com\/workers\/images\/fit=cover,w=360,gravity=0.5x0.5,format=auto\/wp-content\/uploads\/2021\/11\/02155924\/with-the-cover-done-we-need-a-way-to-assemble-it-lauren-fuentes-via-all3dp-211029_download.jpg\" alt=\"With the cover done, we need a way to assemble it\"\/><figcaption>With the cover done, we need a way to assemble it <\/figcaption><\/figure>\n\n\n\n<p>Before doing anything else, copy and paste the sketch, as this will save us time in the long run.<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>Extrude the curved sketch until it reaches the other side of the model (80 mm).<\/li><li>Now, with the copy of the sketch, we\u2019re going to make some slight modifications. Delete the inside part of the drawing, leaving only the outside.<\/li><li>Draw a line to complete the bottom of the base. That way, this part has a solid shape instead of a hollow one. The resulting sketch is shown in the image above.<\/li><li>We\u2019re going to extrude this 5 mm, and we\u2019re going to repeat the same on the other side by creating a new datum plane. This makes up the side walls of the cover.<\/li><li>With all parts done, fuse the results using Boolean operations to complete the lid.<\/li><\/ol>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_8_Adding_Details_to_the_Cover\"><\/span>Step 8: Adding Details to the Cover<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i.all3dp.com\/workers\/images\/fit=cover,w=360,gravity=0.5x0.5,format=auto\/wp-content\/uploads\/2021\/11\/02155928\/final-result-of-the-cover-now-everything-is-ready-lauren-fuentes-via-all3dp-211029_download.jpg\" alt=\"Final result of the cover! Now everything is ready to print\"\/><figcaption>Final result of the cover! Now everything is ready to print <\/figcaption><\/figure>\n\n\n\n<p>We now repeat the instructions of step 5 but for the cover. This time, we\u2019ll extrude the rectangle by 3 mm, but instead of cutting it away, we\u2019ll combine it to make it a part of the same body.<\/p>\n\n\n\n<p>The second detail we\u2019ll add is to create the cylinders that are going to snap-fit to the circles created in step 5. These circles sit on either end of the rectangular prism attached to the cover, and should have a diameter of 2 mm and a length of 1 mm. Remember to use the Boolean operation to combine, instead of cutting, as we want these cylinders to stick out from the cover.<\/p>\n\n\n\n<p>At this stage, it\u2019s a good moment to add some explanations about these dimensions and how they\u2019re affected by the 3D printing process.<\/p>\n\n\n\n<p>The cylinders attached to the cover are smaller both in diameter and length than the holes in the box, to account for the printer\u2019s tolerance and to allow the parts to move. If the extruded and cut-away parts were designed to the same dimensions, they would be unlikely to snap together and would be difficult to move and use.<\/p>\n\n\n\n<p>The results of your print ultimately depend on your&nbsp;slicer settings, but a common setting to use is a 0.2 mm layer height. With this setting, it will take five lines of filament to reach the length of 1 mm. Any fewer lines of filament might not stand up to the wear of attaching and using the cover. On the other hand, the length is set to 1 mm because the tight fit means anything longer might break as you try to snap it into place.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Advice_Considerations\"><\/span>Advice &amp; Considerations<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i.all3dp.com\/workers\/images\/fit=cover,w=360,gravity=0.5x0.5,format=auto\/wp-content\/uploads\/2021\/11\/02155932\/keep-your-treasures-in-a-custom-chest-lauren-fuentes-via-all3dp-211029_download.jpg\" alt=\"Keep your treasures in a custom chest!\"\/><figcaption>Keep your treasures in a custom chest!<\/figcaption><\/figure>\n\n\n\n<p>With our model done, let\u2019s talk about some additional aspects about FreeCAD and how to 3D print a model.<\/p>\n\n\n\n<p>When you save a project, it is stored by default as a FreeCAD Document. If you want to save it for other uses, including 3D printing, you have to export the file. In this case, you also need to select which bodies within the file to export.<\/p>\n\n\n\n<p>When exporting, you have many files options. Here\u2019s a rundown of the most useful ones:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>OBJ&nbsp;and&nbsp;STL&nbsp;formats are useful if you want to 3D print or take into artistic modeling software to add detail.<\/li><li>STEP&nbsp;and IGES formats are useful to keep information about specific software features used and are compatible with other modeling software, like&nbsp;SolidWorks&nbsp;and&nbsp;Fusion 360.<\/li><\/ul>\n\n\n\n<p>When you\u2019re designing, it\u2019s important to also plan for the manufacturing process your part will go through, meaning you have to take into account if certain geometries are actually possible to make.<\/p>\n\n\n\n<p>Additionally, if you\u2019re planning to 3D print your model, there are some special considerations to take. As we mentioned, things like wall thickness and your printer\u2019s build volume are important to keep in mind if you\u2019re designing a part to be a certain size.<\/p>\n\n\n\n<p>For things like the snap-fit knobs used to assemble this box, you also have to take into account your&nbsp;printer\u2019s tolerance&nbsp;either when modeling or when scaling it to print, to make sure it will fit together in reality.<\/p>\n<div class=\"3b0f01c982c849478b934f73fd22ce2a\" data-index=\"1\" style=\"float: none; margin:0px 0 0px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-2361696526152498\"\r\n     crossorigin=\"anonymous\"><\/script>\r\n<!-- apps responsive ads -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-client=\"ca-pub-2361696526152498\"\r\n     data-ad-slot=\"4647471924\"\r\n     data-ad-format=\"auto\"\r\n     data-full-width-responsive=\"true\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n\n<div style=\"font-size: 0px; height: 0px; line-height: 0px; margin: 0; padding: 0; clear: both;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>FreeCAD&nbsp;is a 3D parametric modeling program designed for creating and customizing real-life objects. It\u2019s completely free and open-source. FreeCAD&nbsp;is organized in Workbenches, which provide different layouts of tools depending on the task at hand. This means you can do a lot with the same program, such as drafting, modeling, or assembling. In this tutorial, we\u2019ll\u2026 <span class=\"read-more\"><a href=\"https:\/\/unionline24.co.za\/apps\/freecad\/\">Read More &raquo;<\/a><\/span><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[449],"tags":[457,456,450,451,452,454,455,453],"class_list":["post-458","post","type-post","status-publish","format-standard","hentry","category-best-free-cad-software-to-download-in-2022","tag-freecad-0-19-download","tag-freecad-0-20-download","tag-freecad-download-32-bit","tag-freecad-download-android","tag-freecad-download-windows","tag-freecad-software","tag-freecad-system-requirements","tag-freecad-tutorial"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>FreeCAD - Applications And Software<\/title>\n<meta name=\"description\" content=\"FreeCAD\u00a0is a 3D parametric modeling program designed for creating and customizing real-life objects. It\u2019s completely free and open-source.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/unionline24.co.za\/apps\/freecad\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"FreeCAD - Applications And Software\" \/>\n<meta property=\"og:description\" content=\"FreeCAD\u00a0is a 3D parametric modeling program designed for creating and customizing real-life objects. It\u2019s completely free and open-source.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/unionline24.co.za\/apps\/freecad\/\" \/>\n<meta property=\"og:site_name\" content=\"Applications And Software\" \/>\n<meta property=\"article:published_time\" content=\"2022-05-04T04:20:45+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-05-04T04:20:47+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/i.all3dp.com\/workers\/images\/fit=cover,w=360,gravity=0.5x0.5,format=auto\/wp-content\/uploads\/2021\/11\/02155819\/a-good-initial-set-up-makes-the-process-more-fluid-lauren-fuentes-via-all3dp-211029_download.jpg\" \/>\n<meta name=\"author\" content=\"Gabriel Kofi Alorwu\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Gabriel Kofi Alorwu\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"15 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/unionline24.co.za\\\/apps\\\/freecad\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/unionline24.co.za\\\/apps\\\/freecad\\\/\"},\"author\":{\"name\":\"Gabriel Kofi Alorwu\",\"@id\":\"https:\\\/\\\/unionline24.co.za\\\/apps\\\/#\\\/schema\\\/person\\\/ffe74074ef6933594d3e31facafb1568\"},\"headline\":\"FreeCAD\",\"datePublished\":\"2022-05-04T04:20:45+00:00\",\"dateModified\":\"2022-05-04T04:20:47+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/unionline24.co.za\\\/apps\\\/freecad\\\/\"},\"wordCount\":2675,\"commentCount\":0,\"image\":{\"@id\":\"https:\\\/\\\/unionline24.co.za\\\/apps\\\/freecad\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/i.all3dp.com\\\/workers\\\/images\\\/fit=cover,w=360,gravity=0.5x0.5,format=auto\\\/wp-content\\\/uploads\\\/2021\\\/11\\\/02155819\\\/a-good-initial-set-up-makes-the-process-more-fluid-lauren-fuentes-via-all3dp-211029_download.jpg\",\"keywords\":[\"freecad 0.19 download\",\"freecad 0.20 download\",\"freecad download 32-bit\",\"freecad download android\",\"freecad download windows\",\"freecad software\",\"freecad system requirements\",\"freecad tutorial\"],\"articleSection\":[\"Best Free CAD software to download in 2022\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/unionline24.co.za\\\/apps\\\/freecad\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/unionline24.co.za\\\/apps\\\/freecad\\\/\",\"url\":\"https:\\\/\\\/unionline24.co.za\\\/apps\\\/freecad\\\/\",\"name\":\"FreeCAD - Applications And Software\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/unionline24.co.za\\\/apps\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/unionline24.co.za\\\/apps\\\/freecad\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/unionline24.co.za\\\/apps\\\/freecad\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/i.all3dp.com\\\/workers\\\/images\\\/fit=cover,w=360,gravity=0.5x0.5,format=auto\\\/wp-content\\\/uploads\\\/2021\\\/11\\\/02155819\\\/a-good-initial-set-up-makes-the-process-more-fluid-lauren-fuentes-via-all3dp-211029_download.jpg\",\"datePublished\":\"2022-05-04T04:20:45+00:00\",\"dateModified\":\"2022-05-04T04:20:47+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/unionline24.co.za\\\/apps\\\/#\\\/schema\\\/person\\\/ffe74074ef6933594d3e31facafb1568\"},\"description\":\"FreeCAD\u00a0is a 3D parametric modeling program designed for creating and customizing real-life objects. 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