The menu bar at the top of the window allows you to access various features of FreeCAD, such as the option to import or export models or to customize the settings of the application. For example, the "Part Design" tab allows you to create and edit 3D solid and surface models, and the "Drawing" panel allows you to create 2D technical drawings of the model. The main window also includes a series of tabs and panels that allow you to access different features of FreeCAD. For example, the "Model" panel allows you to select and edit the components of the model, and the "View" toolbar allows you to change the view of the model, such as by zooming or panning. In the main window, you can see a 3D view of the model that you are working on, as well as a series of toolbars and panels that allow you to access different tools and options. It consists of a main window with a series of toolbars and panels for accessing different features and settings. The user interface of FreeCAD is designed to be user-friendly and easy to use, with a layout that is similar to other 3D CAD software applications. It is intended for use in mechanical engineering, architecture, and other fields that require the creation of detailed 3D models. So i suppose this is a bug (partial redundant constraints causing breakage).A free CAD modelling editor which can assist in creating drawings and objects in both the 2D and 3D space with drawing tools.įreeCAD is a free and open-source 3D computer-aided design (CAD) software application. However your project assumes that the arc is a half circle (you used tangency constraints at the 2 points), which isn't always the case. The project you attached is correct indeed, as is my example project with the partial redundancy removed. So this should fully constrain the arc, and as chrisb had pointed out, the issue is caused by partial constraint redundancy, and not lack of constraints. The whole arc is created as external geometry in the 2nd sketch, and the normal arc is created using the external center and 2 points. The arc in the master sketch is defined through center + 2 points (a center with 2 points define exactly an arc, actually 2 complementary arcs). You need here to refer to the center and one end of the 1st arc. You cannot copy an arc with 3 points : an arc is 5 Degrees of Freedom (dof) and 3 points are 6 dof.
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