When the print has been dried and flattened I tack a piece of dry mounting
tissue to it at a spot on one edge. I then make a sandwich of the print and
tissue by laying the print face down on a sheet of release paper with some
padding under it...
Note: Some old Kodak instructions show tacking the release tissue and
print by making an X across the back. This is bad practice and will very often
result in wrinkles or bubbles. Tacking at a spot or short line at one edge
works a lot better. This is the method recommended by Seal.
I never had any trouble using the X method as long as it was very lightly done
and only went about a third or half way to the corners. That was with the
stiffer dry mount tissues and a very small tacking iron.
With the pure-adhesive tissues like Seal Fusion xxxx (2000? 4000? I can't
remember at the moment) they were so heat sensitive that I usually gently
tacked the print, adhesive and board together, using 2 ply board over the print
face and just enough time and heat to make it stick on one edge well enough to
get everything lined up in the press. That's pretty much the whole point of
"tacking" the tissue to the print in the first place.
Myron
