[alt-photo] Re: back to the flaking/speckling question

francis schanberger frangst at gmail.com
Mon Nov 21 22:33:08 GMT 2011

I am a Gamblin PVA user (1:2) but I do want to point out that there is a
shiny factor (i.e. not matte) associated with it which some traditional
gummists take issue.


On Mon, Nov 21, 2011 at 5:24 PM, Diana Bloomfield <
dhbloomfield at bellsouth.net> wrote:

> I agree with Don here about the PVA.  I tried gluteraldahyde, but just
> didn't like working with it (and always felt like I needed to be outside to
> do it).  I did get yellowing with that, but probably-- as you say-- used
> too much, or it was too concentrated.  The glyoxol always gave me
> inconsistent results.
> I think the Gamblin PVA is amazing.  I just pour a very thin amount (no
> dilution, but very thin, very small amount) and brush it on.  I just let it
> dry naturally, and where I am-- it's very quick drying. There's no way I'd
> ever go back to gelatin and glyoxal or gluteraldahyde.  I shudder to even
> think about it.
> My 2 cents.
> Diana
> On Nov 21, 2011, at 5:12 PM, Don Bryant wrote:
>> 3) Dump that glyoxol.  It is a huge PITA.  The 4th in my list of Great
>> Discoveries in Gum is when Christina Z. Anderson popularized
>> Gluteraldahyde
>> as a gelatin hardener
>> +1 on that! Glyoxal can be very iffy. Though, cross my fingers, I've never
>> had it yellow, except when it concentrates in droplets of gelatin on the
>> corner of a sheet of paper when it dries. Glut can cause yellowing, but
>> only
>> when it is used in very concentrated amounts.
>> I think Chris has a write up somewhere on the Alt Process website (or her
>> website) so look for her drill down there.
>> For beginning gummists or gum over whatever, Gamblin PVA 1:1 rolled on
>> with
>> a micro-foam roller and quick dried with a hair dryer is a good method as
>> well. In fact if you use that method and it works well for you stick with
>> it.
>> Don Bryant
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francis schanberger


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