How do you create solids from geometric shapes in @FreeCAD?
You can use extrude and boolean operations. That works in many cases. But sometimes the resulting solid is flawed, preventing you from working with it. Boolean operations with these flawed solids might fail, meshes created from them have holes, missing faces or other problems.
Here is a simple way to create a shell from geometric shapes:
In this video I demonstrate how to create a threaded bolt and the matching core starting from the previous video. A custom offset allows you to adapt for your printer's precision.
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Let me show you how to custom-fit threads in @FreeCAD!
Forget the methods described in the FreeCAD Wiki unless you need a very specific non-standard profile. Custom diameters are much easier than you might think!
I have recorded a little screencast to illustrate how easy it is using Part Design > Hole and custom offsets. Basically, choose your thread profile, e.g., M16, and calculate a custom clearance.
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@fps_gbg thank you for providing beginner-friendly tutorials!
I don't like how scaling to a specific size is so complicated in FreeCAD, so I usually prepare size in Inkscape if I work with SVG files.
There are of course different ways to do things in FreeCAD and yours is as good as mine. However, I prefer the simplicity of the Part workbench as illustrated in the attached video.
It often makes me a little crazy when I see people specify diameters as a radius in sketches that are going to be revolved features. So, I made a little tutorial video showing a trick to directly specify diameter dimensions for revolved features. Though this is in #freecad, it can be used in other CAD as well if the diameter dimension isn't built-in.
Tinx
Friprogramvarusyndikatet
Chi ha ucciso Il Conte?
Chris Huck 
