Mamiya RZ67 rear lens cap

thingiverse

None of the lenses I bought for my Mamiya RZ67 came with a rear cap, and the only 3D models I found are for RB lenses. So, here's one that fits both. This cap is built out of two pieces: - A "lid", or the actual "cap". It fits snugly on the cylinder body at the back of the lens by pressure alone, protecting just the rear optics. - A "bayonet", which engages securely with the RZ (or RB) lenses breech-lock ring to keep the cap firmly in place. I joined these two parts together using a clear two-part epoxy specifically designed for plastics. [Edit 2020-03-31] I added another model that fits perfectly with the RB lenses. Simply print one bayonet and correct lid for your lens (RB or RZ), then join them together securely.