This is a replacement knob for the Bronica SQ-Ai. When I purchased mine, it didn't come with a normal knob or crank and they seem to be hard to come by. As a result, I designed a 3D printed knob which friction fits onto the lugs. It has been working very well for me so thought I would offer it up for other folks that are in the same boat.
Note this is ONLY the knob. The camera is not included. It is just to show what the knob looks like attached to the camera.
For those in the know, I print these using Atomic Filament PLA. I have tried other filaments such as PETG or HTPLA, but haven't found much benefit to using them and PLA seems to provide the best surface finish.
If you would like this printed in another material other than PLA or another color than what I have as an option, just message me and I can see what I have available.
Final note, this is a bit of a beta product currently. It has worked well for me for almost a year but I have only tested it on my SQ-Ai specifically. If you opt to buy this and find it's not working well, or have suggestions on how to improve it, please contact me!