Re: [MOPO] Wrinkle Cure? Starch Backing? Oh my!

[JR]

This new "starch backing" concept is making my head hurt.   Can someone please explain to me... in simple terms... how exactly how this works and permanently removes wrinkles? As I think I understand it, you clean and de-acidify the poster in a bath, then instead of pasting it onto linen to take out the wrinkles, you put a layer of starch (paste) on the back of the cleaned poster while it is still wet from the bath and then stretch it (gently, I presume...)  That way it dries without wrinkles and no backing. OK, fine. But then what? Don't you have to remove the layer of starch from the back? If you don't, won't the poster be stiff and break like a cracker? But if you remove the starch (with water, right?), then how do you prevent wrinkles from being reintroduced by the removal process? Doesn't applying enough water to remove the starch cause the paper to wrinkle again?   And, another question, doesn't all this processing put a lot of stress on the old paper fibers, resulting in a poster with far weaker structural integrity than when you started (and no linen to reinforce it)?   -- JR   ----- Original Message ----- From: Dario Casadei To: MoPo-L@LISTSERV.AMERICAN.EDU Sent: Friday, December 23, 2005 14:27 Subject: Re: [MOPO] Wrinkle Cure? Hi Alfredo, Starch backing would be a great choice if you poster only need cleaning and you wish to leave the linen out. As you can see you have already gotten some good suggestions what to use Like oil of Uley and so on. So I'd like to add to that, make sure that you get an archival cooked paste from scratch either Rice or Wheat starch and not Shure stick 800 wall paper glue, It's sold by the gallon, cheap, quick and easy to work with, but it tack poorly and it molds over. It contains fungicide and other chemicals that has not been test properly on vintage paper, so long term effects are not know. I did and open air study, I wanted to know what all the back door fuzz was all about. I cooked my usual paste, and made a batch of Archival Methyl cellulose by Lineco and I bought a small bucket of Shure stick. I let them sit in 3 independent jars for two day, no lid!! after that I introduced a contaminate brush to each paste. after two day there were mold growing in the Shure stick wall paper glue. I don't think the fungicide and chemicals is there to protect your wall paper, more so to protect the paste its self. and it's not very impressive!! Best Regards, Dario. alfred zelcer wrote: >Would like to know what the best treatment for a very >wrinkled one-sheet is without going all the way to >linen backing. Would an acid bath do it? Or is there a >treatment that works the equivalent of a pressing? >Thanks all, and a merry Holiday to all too! > >AlfredoZ > >         Visit the MoPo Mailing List Web Site at www.filmfan.com >   ___________________________________________________________________ >              How to UNSUBSCRIBE from the MoPo Mailing List > >       Send a message addressed to: [EMAIL PROTECTED] >            In the BODY of your message type: SIGNOFF MOPO-L > >    The author of this message is solely responsible for its content. > > > >          Visit the MoPo Mailing List Web Site at www.filmfan.com    ___________________________________________________________________               How to UNSUBSCRIBE from the MoPo Mailing List        Send a message addressed to: [EMAIL PROTECTED]             In the BODY of your message type: SIGNOFF MOPO-L     The author of this message is solely responsible for its content.