U of S | Mailing List Archive | alt-photo-process-l | RE: Miracle size for gum

RE: Miracle size for gum



Mary,

 

If you do a search in the archives you’ll find quite a lot on bleach development.

 

John.

 

From: Mary Pat Mcnally [mailto:mcnally@psfc.mit.edu]
Sent: 13 October 2009 14:38
To: alt-photo-process-l@usask.ca
Subject: Re: Miracle size for gum

 

What is blech(?) redevelopment? Do you mean bleach redevelopment?

If it is bleach redevelopment, what do you mean. I have only developed with water.

Thank you, Mary Pat

 

 

On Oct 10, 2009, at 11:36 AM, Marek Matusz wrote:



Sorry about this 
The bottle says POLYVINYLACETATE!!!!!!!!!!!
I don't know how I wrote something else that's on the label, while looking at it. Thanks Phritz for discovering my mistake
Marek 
> Date: Sat, 10 Oct 2009 14:36:05 +0200
> From: phritz-phantom@web.de
> Subject: Re: Miracle size for gum
> To: alt-photo-process-l@usask.ca
> 
> hi marek,
> does it really say "pv alcohol" on the bottle, not "pv acetate"?
> i found the data sheet on the gamlin site yesterday and there it says:
> "Product: Poly Vinyl Acetate (PVA) Glue
> Chemical name: Ethylene/Vinyl Acetate Copolymer"
> 
> http://www.gamblincolors.com/msds/pdf/drying_oils/msds_PVA.pdf
> 
> what i've learnt on the substances so far (i think mostly from a post 
> from katharine thayer on apug), is that pv-alcohol is basically a simple 
> glue and not waterproof and pv-acetat is insoluble in water and the 
> better size.
> 
> regards
> phritz
> 
> 
> 
> Marek Matusz schrieb:
> > Loris,
> > A note on the bottle says "post plasticezed neutral pH ply vinyl 
> > alcohol).
> > perhaps one can mix a PVA solution from polyvinylalcohol that can be 
> > bought. I suspect that there are other additives in the Gamblin 
> > product, but they might not be all that relevant to the gum sizing.
> > I also have to add it is so simple to just take some solution from the 
> > bottle, add water and brush it on paper, no additional chemicals, no mess.
> > Marek
> > > Date: Fri, 9 Oct 2009 23:48:02 +0300
> > > From: mail@loris.medici.name
> > > Subject: Re: Miracle size for gum
> > > To: alt-photo-process-l@usask.ca
> > >
> > > Thanks for the report Marek. Unfortunately we don't have Gamblin
> > > products here in Turkey. Do you have any idea about the formula? I can
> > > find PVA but I'm not sure which one to buy and how much to use...
> > >
> > > Not directly related but just wanted to mention: For those who are
> > > interested in "casein", the miracle sizing is cheap acrylic gesso 1+4
> > > (or 1+5) with water.
> > >
> > > Regards,
> > > Loris.
> > >
> > >
> > > 2009/10/9 Marek Matusz <marekmatusz@hotmail.com>:
> > > >
> > > > All,
> > > > A few weeks ago there was some discussion on PVA sizing and I 
> > decided to try
> > > > it for gum.
> > > > ...
> > > > The 1:2 turned out to be a miracle!
> > > > ...
> >
> > ------------------------------------------------------------------------
> > Hotmail: Powerful Free email with security by Microsoft. Get it now. 
> > <http://clk.atdmt.com/GBL/go/171222986/direct/01/>
> 


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