6x12 roll film back for 4x5 cameras

Last crawled date: 4 years, 3 months ago

Roll film back for shooting 6x12cm format with 4x5 cameras.
The basic idea is borrowed from the chinese DaYi / ShenHao roll film backs.
Main design principle is to keep it as simple as possible and avoiding special or exotic third party parts or tools.
Third party parts:
2x rods or tubes with a diameter of 6mm and a length of 72mm
2x countersunk screws M6x30mm
2x butterfly or knurled nuts M6
1x dark red gel with about 14mm for the frame counter window (optional)
1x sheet metal 160x70x0.5mm for dark slide
2x sheet metal from a tin can, about 20x60mm
a little bit of plastic glue
1x velvet ribbon, about 10x90mm as light seal for the dark slide
2020-01-25 updated the base plate top (slightly higher light seal, corrected flange measurements)
2020-01-26 updated the cover because it was a little bit to tight on the film insert. New version has about 0.2mm more space on each side. This helps also, if you are using some colored filament and thus have to paint the inside of the cover in black.
2020-02-02 updated base plate bottom and base plate top to new version 2.4.
I added a wall at one side and on the other side an indent for a light seal (glue velvet ribbon into the indent.
Also updated the pictures to ones from the latest build and removed the ones from the old version.