A while back I promised to share the kit of parts I’ve used to run a couple of antweight-ish robot building workshops.
If I got the permissions right you can find all the parts in here:
Printable parts are exported as 3MF for slicing. Laser cut parts are DXFs - I used 3mm MDF and 0.5mm polypropylene.
There’s also a Fusion Archive for most of the bits which will probably be useful if you need to tweak tolerance on the holes or adjust for different models of servo. Some of the lasered bits were designed in QCAD so the DXF is the source file.
It’s all designed to be held together with M2 self tapping screws to keep things simple. I’d recommend providing some 2mm (or just over) drills for making clearance holes - ideally in a pin vice, cable ties for strapping motors in, and some 0.5mm or so craft wire for making linkages and long pivots.
Hope someone finds this useful.