Graflex Speed Graphic Lensboard

thingiverse

I designed this to mount a Pentac 8" F2.9 onto my Speed Graphic but you should be able to remix it to mount any barrel lens. I made the center part intensionally thick to make sure there's no light leak as well as to clear the retaining ring I used to mount the lens onto the lensboad. Obviously, that can be made thinner to suit your needs as well.