FreeM42-Mount Adapter for Canon AF35ML 40mm f/1.9 Lens Cell - Requires Focusing Solution
Thingiverse
8 model
Free
FreeAutolock M4 Nut for Profile 30x30 (Rebel 2)
Thingiverse
FreeM39 to M42 lense adapter
Thingiverse
FreeM4 8mm Bearing Selector Plate - V1.2
Thingiverse
FreeM42 to ???
Thingiverse
FreeVirtuoso to M42
Thingiverse
FreeM51 to M42 Adapter
Thingiverse
FreeBraun Paxon 85 f2.8 Projection Lens M42 Housing with apature
Thingiverse