Offset Step-Up Ring for Mamiya TLR (C330, C220) lens 80mm/105mm

prusaprinters

Slide on offset step-up ring to 58mm thread for Mamiya TLR (C330, C220). Tested on 80mm f/2.8 and 105mm f/3.5 lenses.There is no thread designed for 58mm side, but print surface provides enough friction for a snug fit.  Print is done in 2 parts with biggest surface area towards the bed. No supports needed. Then 2 parts can be glued together with superglue. There are 3 openings for alignment. I've used wooden toothpicks and then just snapped them off and colored with a black marker.Pictured with 58-77mm metal step-up ring to mount 10 stop ND filter.