I'm learning FreeCAD and 3D printing. My goals are to be able to print involute gears, and eventually various mechanical arithmetic devices, leading up to a mechanical version of my BitGrid. Also, I want to make an Armstrong shaper.

A friend gifted me a large box of semiconductors, and I'll be testing 7400 and 4000 series chips for the next week once my T48 EPROM Burner/IC tester shows up.