They were being thrown out.
On Fri, Dec 29, 2017 at 7:29 PM, Richard Lahrson <gtripspud@xxxxxxxxx>
wrote:
Richard,
Go ahead and publish here! it should
be like revisit to RIT freshmen class, though
I've got both of Vestal's books.
Rich
On Fri, Dec 29, 2017 at 6:10 PM, `Richard Knoppow <dickburk@xxxxxxxxxxxxx>
wrote:
I am not sure what the heated glass is supposed to accomplish. The
flattening method is actually drying in a drymount press and then holding
the dried print under pressure until it curls.
The curl comes from differential shrinkage between the emulsion and
the support. It is mainly a problem with silver-gelatin prints and may not
be at all for prints without a coating left on the paper such as platinum.
Ideally, the flat plates should be something that absorbs heat well,
hence my suggestion of aluminum. However, it can be a variety of materials.
I have used plywood quite successfully, I just leave the sandwich of paper
and absorbent in it for a little longer to be prints mounts or clean
cool.
The absorbent material can also be a variety of things, for instance
several layers of clean Kraft paper works very well.
For just flattening I use the same method as I do for dry mounting, I
just stop after the flattening step.
At least with fiber support conventional paper prints flattened in
this way do not seem to curl again even in very dry weather. The process
does not work well on RC paper. I have had RC prints curl up into small
tubes in very dry weather but they flatten out again when the RH goes up.
I have not tried dry mounting other than conventional silver prints
but it works very well on both fiber and RC prints. Maybe not on other
materials although dry mounting is suggested for a number of art processes.
For Adrienne, just get a couple of sheets of 3/4" high quality plywood
with smooth finish cut to whatever size you need. You can screw a handle or
a couple of handles on whichever is to be the top. Will work fine.
I will post my whole dry mounting procedure here if anyone is
interested. Lots of typing but will be a chance to check out my newly fixed
carpal tunnel problem.
On 12/29/2017 4:23 PM, Richard Lahrson wrote:
Hi,
I haven't had much trouble with mat curl from drymounting,
but my mounts are all 12x16" to KISS, and two
ply also. I've got 2 1/4" plate glasses 25x28" used
for carbon printing. I'll start using those for after
drymounting press. I could warm them up in the oven.
Rich
On Fri, Dec 29, 2017 at 1:44 AM, Luis Miguel Castañeda <octabod@xxxxxxxxx
wrote:
locally sourced track? :D
Now that you say that, and seriously too, a piece or two of fairly thick
glass heated up in a oven (using common sense) should do the trick.
The glass will keep hot for a while once out of oven, enough to flatten
fiber. I was going to try this method when a kind member found me, and went
through the PITA of shipping it, a dry mount press which certainly makes
life a lot easier.
William Harting writes:
I usually find a quarter-inch sheet of glass, but for resistant curIs I
will sometimes use a sink cutout weighted down with a one-foot length of
railroad track.
--
Best regards.
Richard Knoppowdickburk@xxxxxxxxxxxxx
WB6KBL
