Re: Now for something completely different (from gum)

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From: Darryl Baird (dbaird@umflint.edu)
Date: 07/29/03-07:24:22 AM Z

Yep, but I haven't found a source for silane. A Google produces lots of
hits, but on the more "industrial" level. I'd appreciate any readily
available products.???

thanks

Darryl

Ed Buffaloe wrote:

>It seems like Dick Sullivan was talking with someone about something
>called a silane that is used for adhering emulsions to glass...
>
>----- Original Message -----
>From: "Darryl Baird" <dbaird@umflint.edu>
>To: <alt-photo-process-l@sask.usask.ca>
>Sent: Monday, July 28, 2003 10:02 PM
>Subject: Re: Now for something completely different (from gum)
>
>
>Thanks Sam,
>
>I think the dichromate additive would do the trick. It will harden the
>gum (and whatever is in suspension) when it is hit by UV light. That
>should fix it. (I think.) I did a test later in the day... after
>mulching... and got a really good image on glass (using a 2200 with Cone
>Piezo black inks and a new curve I worked out), but watched it dissolve
>away as I rinsed the plate. Gum alone just isn't enough, but the sight
>of the image was truly exciting.
>
>If the gum/dichromate/cyano combo is a bust. I'll go back to gelatin. We
>began there, but I wasn't involved yet and I think the glass wasn't
>clean enough: the cyano layer moved all around, forming a lumpy mess. I
>moved to using sodium hydroxide (5% solution) to clean the glass,
>followed by distilled water and a clean paper towel wiping. Very clean!
>
>to be continued...
>
>P.S. ...since it is night, I'm firing up Big Bertha, my seldom used
>metal halide UV plate burner. Roaches may be heading back south after
>tonight. Heads up!
>
>Darryl
>
>
>

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