lens board for Goodman One?

cdelger, the camera is designed for medium format Mamiya press lenses and they have a bayonet mount. They all have built in shutters and do not use separate Copal shutters. Is it possible you are using a large format lens by mistake? The front of the camera should readily accept a Mamiya press lens without a lens board. I easily installed the Mamiya 100 3.5 Press lens by twisting it onto the front of the body. The only real issue is that it doesn't have much locking rotation and can easily fall off. I solved this by using the side screw holes near the mount with long enough screws that would contact the lens to hold it. You could also use the lens retaining ring STL file that Ms. Goodman just uploaded earlier this month. My guess is the retaining ring was made to solved the issue of the lens potentially falling off.

I'm currently selecting hardware to assemble my first Goodman One. The lens I'm planning on using is also uses approximately a Copal #0 sized lens board. The diameter of the lens thread is 30mm, and the outer diameter of the retaining ring flange it comes to something close to 31.5 mm. The lens is Wollensak Rapax / Raptar 101mm lens. I believe this was probably from a Crown Graphic 4x5. While the glass is probably not as amazing as a Mamiya, the shutter seems to be in perfect condition. If I ever need something different, I can upgrade in the future.

That said, it looks like the front will need to be modified to accommodate the lens. I'm considering the approach to take, which could either be modifying the front to take a Copal 0 lens, essentially forking the design. The alternative would be to make a Mamiya mount to Copal 0 adapter, which would make it compatible with revisions of the Gibson One front in the current form. For my purposes, I'd probably go with modifying the design to accept the Copal 0 lens, as this requires the least amount of effort.

Here is the lens and a 100mm lens board.