RE: pt/pd mounting > not gum related
Gawain, That's what I figured, but I wanted to make sure I hadn't drifted off into a dillusional dream world. I'm rather attracted to the idea of cracked coatings; does anyone know of any methods of accelerating this with polyurethane? Or perhaps another (at least somewhat archival) substance that will crack under heat/etc.? Chris (if you're listening), do the varnishes in your Alt Processes crack fairly easily? Camden Hardy camden[at]hardyphotography[dot]net http://www.hardyphotography.net On Tue, September 12, 2006 9:19 am, Gawain Weaver wrote: > Camden, this is all theoretical since I have never seen any 50 or 100 year > old polyurethane-coated pt prints. But I don't think a polyurethane > coating > will degrade the platinum print any faster. My concern is with the fact > that > the coating cannot be removed, so any damage or deterioration to the print > or the coating or the adhesion of the coating to the print will be nearly > impossible to fix. In contrast, a stained or torn pt print can generally > be > repaired very satisfactorily. It's impossible to know what kind of damage > would happen first. If nothing accidental occurs, then I imagine it would > be > some kind of cracking/peeling/delaminating/discoloration. Applying a > difficult to remove coating or laminate to a piece of paper in the name of > protection has been done many times over the past 60 or more years in the > archival world. And to my knowledge it has always turned out badly in the > end. Granted, no one has used polyurethane. But I have no reason to > suspect > it would be any better in the end. > > Gawain Weaver > > > > > > > Gawain, you mentioned that from a conservation standpoint polyurethane is > a nightmare. Could you elaborate on that a bit? Will it degrade the > print faster, or is it simply a matter of cracking/peeling? > > > Camden Hardy > > camden[at]hardyphotography[dot]net > http://www.hardyphotography.net > >
|