[pure-silver] Re: Shot of another defective print
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Sat, 11 Aug 2007 19:23:39 -0700
----- Original Message -----
From: "Eric Nelson" <emanmb@xxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Saturday, August 11, 2007 4:11 PM
Subject: [pure-silver] Re: Shot of another defective print
I forgot to mention that. I use fiberglass screens to
dry and a dry mount press to flatten.
I use a piece of rag board cut to size to protect from
the press' pad in case anything is in there and change
out the board from time to time.
Eric
Its possible some contaminant was on the screens although
fiberglass should not absorb anything. A warm water rinse
should clean them.
The idea of the screens is that they retard the drying of
the emulsion with regard to the support to reduce curling.
The same thing for the waxpaper in blotters. The moisture
leaves through the support.
Dry mounting is supposed to be quite archival. The only
objection to it is that dry mounted prints may be diffult to
remove if they ever need restoration. I think dry mounting
looks better than any other method. However, current gallery
practice is to mount prints using something like archival
quality corners under a matt. This can be made to look good
if the prints are flattened in a drymount press.
Usually, if the press is too hot the effects will be
immediate. Some papers are subject to "plumming" a change in
the structure of the silver particals brough on by the heat.
This results in a plum-colored stain as the name implys.
Modern dry mounting tissue fusses at a quite low temperature
and modern papers have anti-plumming ingredients so this is
not a very common problem.
A long time ago I posted my own version of the Seal
mounting method. It may still be in the Pure Silver
archives. If not, I will dig it out, see if in needs any
corrections, and post it again. Part of the method is
flattening the prints in the press, this method works fine
for any kind of mounting or for unmounted prints. Generally,
the prints stay pretty flat over time despite changes in the
climate.
---
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
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