I'm learning a .stl file appears to be <> .dwg file <> .step <> [insert favorite 3D modeling software file format here].
Inventor 360 supports importing .stl files but how to modify them is not immediately obvious. (As in the straightforward way an object is scaled does not appear to work on imported .stl files, but there are claims it is supported)
It's all quite frustrating when all I want to do is scale the Q-axis pulley supports ~3mm and I can't separate the two pieces in the .stl file to scale each of them in the appropriate axis.
I used 3D Studio & 3DS Max for years in another life and optimistically am hoping a similar level of 3D modeler is available, minus the lighting, camera, motion, texture, etc. controls.
In the meantime I'm working on the support rails for the gMax bed and working on addressing Z-axis wobble.