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

[Diana Bloomfield]

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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