A friend of mine who ran a print farm actually told me about OpenSCAD when I shared a screenshot of my first design (a ball joint with armature). So I didn't take inspiration, but I plan on learning it just to figure out how they handle things like fillets. Because currently my fillets are blowing up. I contemplated just faking the fillets using an extrusion with a cylinder cut out of it, but if I can define edges in code and fillet them that would be better.
They have to be done manually, usually using the Minkowski feature iirc.
There's another similar tool called implicitcad that handles them better (it's also the only useful piece of software written in Haskell I've ever encountered) https://implicitcad.org/
> So I didn't take inspiration, but I plan on learning it just to figure out how they handle things like fillets. Because currently my fillets are blowing up.
They don't. So save yourself that trouble. You design the fillets right into the extrusions doing them after the fact is prohibitively expensive.