> If you dry paper rapidly with a hair drier, especially one where the
heat is so
> great that steam results, the paper is going to distort and shrink. I use a fan
> heater which gives a steady stream of warm air that does not give rise to the
> difficulties that seem to make a substrate necessary.
I airdry the stretched paper, that is, just leave it until it dries
without any application of heat, and yet I find that it buckles nevertheless
-- as I described several days ago. Which is to say, I don't think it's
heat, steam or heated steam causes the buckling when paper is taped around
the edges.
As for getting a bubble in drymounted paper, it should help to cool it
under a weight, like a sheet of plate glass.
Judy