Remixed from Bradbrok's original files.

Two printed parts fit together with 4x printed pins in each corner. No tools or hardware required.

The hoods included for each holder is designed around using a Nikon 55mm f3.5 Micro-Nikkor lens on a Fuji X-T2. With the 35mm holder, a regular mount adapter fills the frame. With the 120 holder, a speedbooster type mount adapter fills the frame with a 6x6 image. Pin the lens to minimum focus distance and you should be good to go.

Originally I was going to include a rolling advance mechanism but found that it didn't really work as well as expected and decided to ditch it.

Neither of these holders will show the borders / sprockets. I found that general scan quality is much better if there is no light spilling around the edges of the frame.