I do 4x5 infrequently and in small quantities. An 8x10 Ilford Cibachrome paper drum on the closeout bin at a local store got me thinking (a dangerous, if infrequent, event). I could cut the drum down to about 6 inches in lenth, add spacers/guides lengthwise in the drum, and have room for 3 4x5 sheets with daylight tank ability to add and drain chemicals. This assumes the film (emulsion side out) would stay in place. The spacers would need to be high enough to keep the film in place but low enough to allow chemicals to pass over when the drum is rotated. I don't have a really functional darkroom yet, so the daylight chemical change is key. One would think this has been tried before. Any thoughts, guidance, advice? Thanks in advance.