FreeCAD is an open-source parametric 3D modeller made primarily to design real-life objects of any size. Parametric modelling allows you to easily modify your design by going back into your model history and changing its parameters.
Designed a case for a measure tool, I’ve printed a case for a while ago.
What are my thoughts : I like it, I like the setup, workbench and the fact that you can edit every step again.
Measure diameter case using 3D printed tool
Draw case using FreeCAD
A 3D CAD mouse helps!
Below, a technical drawing exported to PDF using FreeCAD
I forgot the holes for mounting, these I did using Bambu Studio.