Thanks, I bought 4X5 paper to make paper negatives thinking it would fit my holders to find out they needed about 1/10 inch trimmed off each side. I like to keep exposure to safelight to a minimum and trimming just adds to that exposure. I do trim before flashing the paper and then get it into a holder or a box directly. Joe V. has inspired me to make a 8X10 sliding box camera.
8x10 paper is actually 8"x10", whereas 8x10 film is 7 15/16" x 9 15/16". I usually have to trim 1/16" off both sides of the paper to get it to fit, but some film holders might have enough wiggle room to accommodate a full sheet of paper without trimming.
I've also discovered that paper isn't always cut to the same degree of precision as film is, since it doesn't have to be. In this respect, quality control varies from one mfg to another, perhaps one batch to another. And humidity is always a greater factor for paper versus film base.
Never had a problem with Kentmere or Ilford branded 8x10 fitting in a 10x8 holder or indeed vice versa, and I've used 30/40 year old paper and I've used brand new fresh from the factory paper.
Never had to trim it, never had bowing or any other problems with it.
I have read (not at APUG) that some people have had minor problems with other brands of paper however - Adox was mentioned as I recall
Never had a problem with Kentmere or Ilford branded 8x10 fitting in a 10x8 holder or indeed vice versa, and I've used 30/40 year old paper and I've used brand new fresh from the factory paper.
Never had to trim it, never had bowing or any other problems with it.
I have read (not at APUG) that some people have had minor problems with other brands of paper however - Adox was mentioned as I recall
I would probably be using Arista grade 2 RC paper from Freestyle. Guess I'll know for sure when I spring for a couple of Lisco or similar holders. Thanks everyone for all the input.
I just tried a Kentmere sheet of paper in a Fidelity holder and it fit, but quite tight width-ways without bowing noticeably. It perhaps depends on humidity and whether the tolerances add up in the right way. Isn't the Arista paper made by Foma? I don't have any 8x10" from Foma to test with unfortunately.