Mamiya Press mount vary from:
https://www.printables.com/model/1019786-mamiya-press-bayonet-with-lockring
ALPA Lensboard from:
https://www.printables.com/model/1021541-alpa-standard-lensboard-with-focal-plane-sign
screws
M3x8 FLAT x4
M2x10 FLAT x6
M2x8 CHEESE x8
Note:
Due to dimension error from printing, the flange distance could be difference. In this model, there are 0.5mm reserved space, check flange distance and add spacer after assembled.
The author marked this model as their own original creation.