RE: pt/pd mounting
Well, it took a while, but we finally got some interesting conversation going. Thanks to those who contributed. So, to make sure I understand this, here's my take on the topic (please, correct me if I'm misunderstanding). In theory, pt/pd has enough acid problems to worry about without using an acid board, so use buffered. However, there's no proof either way that buffered/neutral pH board actually increases the life of the print. Right...? Loris, your polyurethane comment intrigued me. This could add a very nice aesthetic effect to the series in question, so I may have to give it a try. I would be very interested to hear the results of your tests if/when you and Ryuji get around to it. Keep me posted! Camden Hardy camden[at]hardyphotography[dot]net http://www.hardyphotography.net On Mon, September 11, 2006 3:11 pm, Loris Medici wrote: > AFAIK, polyurethane wood finish (like Hydrocote) is impermeable to air and > water. If one coats both the front and the back of the print with > polyurethane that should protect the print very successfully (at least in > theory). I remember Ryuji had offered me his time by doing a peroxide > fading(?) test if I send him a couple of samples (polyurethane coated > Vandyke). Well if he's still interested I'm willing to send him few > samples > (one coated on the front only, the other both sides and an uncoated > control > strip)... > > Regards, > Loris. > > -----Original Message----- > From: EJN Photo [mailto:ejnphoto@sbcglobal.net] > Sent: 11 Eylül 2006 Pazartesi 23:00 > To: alt-photo-process-l@usask.ca > Subject: RE: pt/pd mounting > > ... > > The process is subjected to a variety of pH environments and different > practitioners will use different clearing bath and what not affecting the > pH > of the paper. I doubt any one has studied the new sprays meant for ink jet > prints on the longevity of PT/PD prints. If the air is what carries the > sulfur, than eliminating contact with the air seems like a place to start. > Or will the sulfur migrate through the protective surface? > > ... > >
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