[pure-silver] Re: Pressure Adjustment on Seal 160M
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Sun, 4 Feb 2007 15:34:13 -0800
----- Original Message -----
From: "Adrienne Moumin" <photowonder2010@xxxxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Sunday, February 04, 2007 2:25 PM
Subject: [pure-silver] Pressure Adjustment on Seal 160M
I found this very straightforward-seeming instruction sheet
here:
http://www.forframersonly.com/pdf/PRESSURE_ADJUST_FOR_MECH.pdf
and I am wondering whether anyone has done this, and has
any additional advice to offer.
I think my pressure is a bit tight, I use 5 sheets of
matboard to flatten 4 prints at a time. I close it
without locking it, and even still I think the prints are
picking up a very slight impression from the boards.
Thanks in advance for an insights!
-Adrienne Moumin
Use a sheet of release tissue over the emulsion side of
the print. Pad release tissue and the back with a couple of
sheets of heavy Kraft paper. That should eliminate any
embossing of the emulsion side.
There is another reason for using the release tissue:
prints curl because of the differential shrinkage of the
support and the emulsion. By drying out the support more
than the emulsion the curling is eliminated or, at least,
reduced. The release tissue over the emulsion keeps the
moisture in. Its also very important to place the entire
sandwich of print, release tissue, and Kraft paper under a
flat weight to cool. If this is not done the flattening will
not be complete. The best weight is a sheet of Aluminum but
even plywood will work, it just takes longer to cool.
I would also use less matt board because you may not be
getting a high enough temperature. The drying and flattening
process takes only a couple of minutes in the press. The
cooling time under the weight depends on what its made of
but is only a few minutes even for plywood.
I've used the dry mounting press method for flattening
prints for years and find that, once flattened this way, the
prints tend to stay flat even during extreme variations of
relative humidity (BTW, its 8% here right now but rain is
predicted in a week).
---
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
=============================================================================================================
To unsubscribe from this list, go to www.freelists.org and logon to your
account (the same e-mail address and password you set-up when you subscribed,)
and unsubscribe from there.
Other related posts:
