I know of people on another forum that had 3D printed 620 to 120 film spool adapters made, as far as I know it was in part successful though the adapters did eventually fail due to layer adhesion, printing in a different orientation or with different filament may have overcome the problem.I have been looking at some of the old Kodak MF camera's and a stumbling block to purchasing has been the requirement for 620 film. Has anyone managed to overcome this hurdle?
flynngraphics.ca
Those Medalist's look incredible cameras.They did. Rudolf Kingslake worked for them. Lenses from the era when he was in charge of QA are almost legendary. If you don't know the name, look him up. His books are all well worth reading.