4x5 film development tank

DO NOT GLUE THE TOP FILM RETAINER

It should be loose so you can slide film in/out.
Use a dummy sheet of film to get the tolerances right before permanently gluing together.

Open source with STEP files

26.02.23
Updated to v3

• Light proof lid, can fill tank in ~8 seconds, empties in ~6 seconds.
• Uses TPU seals, print in soft TPU for good seal (tried with 95A TPU, does not work)
• Uses 2x M3 threaded brass inserts and 2x M3 40mm bolts for the latches
   

Might be better to use silicone for seal.