[dancqu]

I think relative humidity has more to do with the amount
of "frilling" of the edges than anything.
I have tried all of the suggested methods, and for years, blotters,
with the corragated separators, which produced the flattest prints,
by far, but I got tired of worrying about lint and accumulated
contamination, careful as I am.

Your method of pulling and hanging wet prints reminds me
of a wheat or rice glue method of mounting prints. A same
but blank or waste print, also wet glued, is mounted on the
back of the mount board. Two wets = no warp.

To level the playing field, lint, dust, and chemical
contamination are of concern what ever the method of
drying. I think my adoption of a water repellent hydrophobic
non-woven material an improvement over the usual absorbent
blotters. I believe it leaves NO lint of itself and being water
repellent it should need no more cleaning then screens of
any same synthetic fabric. The non-woven polyester is
called interfacing and is available from any well
stocked fabric store. Very inexpensive. Dan