4x5 Sheet Film Reel for Daylight Developing Tanks

by CrazyMonkeyBen, published

4x5 Sheet Film Reel for Daylight Developing Tanks by CrazyMonkeyBen Apr 8, 2015


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This film reel holds 6 sheets of 4x5 film for developing in a daylight processing tank.

It has been tested in a Jobo 1526 tank, but should work in most tanks which can hold at least 3 35mm reels and have a 1" center core.


Print both halves.
Thoroughly clean the spiral grooves with a knife and sand paper. any bump will make loading the film impossible.
Glue the two haves together.

To load, start with the two inner most slots, gently hold the leading edge of the film pressing it inward to encourage it to follow the spiral curve. Make sure the end tucks under the retaining ridge at the inside of the core. If developing fewer than 6 sheets, load so that the outer most slots are full and the inner slots are empty.

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Great job! I´ll try to print one in PETG, which should probably be ok with the chemicals, just like ABS. PLA will definitely not work, I once did a spare clip for an old jobo tank in PLA. It lasted maybe 3-4 rolls, then in came apart.

you can copy normal reels of jobo 1500 or 2500 series? tnaks a lots!!

Hi, I'm new to the 3D printing and the specifics of the filaments. As this is a thing that will be immersed with water and chemicals how well would I expect it to hold up if made from PLA? As my 3D Printer only does PLA if PLA doesn't hold up under immersion then I can't use my 3D printer to make. I've already gone ahead and printed the two halves anyway. Need to clean them up and glue together. With regards to glue. Did you use any special glue? Again as it is going to be submersed would silicone (fish tank safe) or epoxy work best? Tanks (pun intended) for this awesome looking reel. If it is easier than a MOD54 reel and works in my Paterson tank this will be wonderful. Cheers!

I have no idea about the durability of PLA. The dev tanks are made from ABS so I figured that would be safe. I also have no clue about glues for use in chemicles. I just used acetone to melt the ABS together.