Very doable, even if you don't have the processor. You just need to hunt for an extra lid and modify it by epoxying a cup on the underneath. Cup needs to be half-open at the to and the lid needs to be taped to the Expert drum with self-adhesive tape to prevent leakage. Temp is easily controlled with cheap Chinese titanium aquarium heaters - two will heat a large water tank to 38 deg. C easily. I did many runs of 4x5" transparencies and every one turned out perfect. One-shot, of course. Chems are in a dedicated fridge under Vineyard Fresh (97% argon, 3% nitrogen). Just do it!