Yeah, I haven't given solvespace a try yet, but it looks very promising. Its workflow is just the same as the one I was using most of the time in autodesk Inven

Yeah, I haven't given solvespace a try yet, but it looks very promising. Its workflow is just the same as the one I was using most of the time in autodesk Inventor/Fusion/Solidworks: 2D plan, place constraints like parallelism, angles, lengths, collinear, etc. extrude. Repeat, with maybe 3D constraints in some places (coplanar etc). The only thing I'm unsure of is if it supports some functions such as milling, threads, etc. I think interfacing it with OpenSCAD just for this use-case would be huge (define the function in OpenSCAD, apply it in solvespace). I tried hard to use FreeCAD, but maybe not hard enough, as I really had some difficulties using that workflow (IIRC, finding the 2D planner interface was difficult enough, and constraints didn't work as expected). It did have an OpenSCAD interface, though. The last point is something worth mentioning: an opportunity FLOSS has that proprietary software often lacks is interoperability, either with the save formats, or directly with APIs, or calling each other for specific parts. I wish this was leveraged a bit more in this space.