4x5 sheet film developing reel/holder/insert for paterson 3 tanks.

Made out of sandblasted aluminum and stainless steel threaded rods, these holders fit a standard Paterson 3 tank. They hold 8 sheets of 4x5 film, and need 1 liter of solution. Other configurations (6, 7, 8, 9 or 10 sheets) are possible.

The aluminum parts have an applied conversion coating, that is invisible to the naked eye, to delay oxidation.

Depending on what material is at hand during assembly, the cross-shaped ends of the reel, are either carbon fiber (as pictured) or aluminum. There is no functional difference between the two materials, only an aesthetic one.

I've been developing 1000+ sheets with this holder over the years, and have gotten scratch free negatives, even developing, and repeatable results.

Gentle agitation is key, so as not to dislodge the sheets from their position. Some developers, like HC-110 with Kodak B/RA x-ray film, benefit from constant agitation.

Loading becomes quite easy after a few practice runs.

Custom configurations different from 8 sheets, are made on a per order basis. Lead time would probably be around 1-2 weeks.

!!! Does not fit stainless steel Nikor tanks, or any other types, that have an interior diameter less than 3.85" !!!