EL Nikkor Reverse to Nikon F mount adapter

thingiverse

I made an adapter with a 3D printer to connect the Nikon enlarger lens to the Nikon F mount in reverse. This can be used in combination with bellows for high-magnification close-up photography. The male screw on the lens side of the enlarger was designed with a diameter of 10.5 mm and a pitch of 0.5 mm. This was matched to the EL Nikkor 50mm. It was designed in two parts to improve printing accuracy. It was glued after printing. The print thickness was 0.2mm. Since the male screw pitch is 0.5 mm, it is easy to insert it diagonally when the lens is screwed in. You need to be careful.