Luckily for us, today, we can make ULF plates for less cost than ULF film .
Originally Posted by jnanian
Dennis: I'm pretty sure you would have good luck contact printing your old plates if you used a contact printing frame. They really are necessary for sharp printing. A sheet of glass just doesn't have the weight required. It might work for a process where a bit of softness isn't a distraction, but not so much with gelatin papers (in my opinion, of course). The rub is that you need a frame that's exactly the size of your plate. The plate replaces the glass. The old contact printing frames did just that. All the modern frames seem to be an inch longer in both dimensions to meet modern printing habits ( i.e. a frame advertised as 11 x 14 is really 12 x 15). You can look for antique frames or you can make your own from a sturdy wooden picture frame, 1/2" plywood, thick felt, and metal straps for press-downs.
If anyone knows of a commercial source for new frames exactly the dimensions of the various standard plate formats, I love to hear about it.