Hi All,
In my eternal quest to distill art from the depths of space between my ears and apply it ( the art) to paper I have determined the following:
1)
PVA - white but dries clear - soluble in water - used as a waterproofing agent and plasticizer in cement etc..Does indeed work as a size applied once diluted 1 - 12 with bottled water. When dry it is insoluble in water.
2)
PVA - trans/lucent/parent and sold as 'gum' - mixed 1 - 3 with bottled water - initially rejects Potted dick solution, clotting with the pigment. After leaving to stand for a couple of days at room temperature, PD solution is not rejected and mixes well with pigment. It is very fast exposure wise and is soluble in water unless hardened. It also renders nice tonal images from diginegs and shows superb detail (if required of course).
I know nothing about co-polymers, polymers. This is just empirical. I also think it helps to be slightly anxious.
David H (from temporary UK residence so you may never see this)
--- Orjinal mesaj ---
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Sent: Wed Aug 03 00:59:08 EEST 2005
Subject: Re: PVA vs. PVA
Quoting Katharine Thayer :
> Since no one answered my question about why PVA rather than acrylic, I
> decided to answer it myself and went out to size some papers with (1)
> PVAcetate and (2) acrylic medium, to print with gum and compare. But
> right away I realized I have a problem, because my PVAcetate doesn't mix
> with water; it precipitates out in clumps when mixed with water.
All the PVA glues I've ever come across were water based, easily diluted with
water, and softened by water even after they have set.
--
Peter Williams
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Received on Fri Aug 5 12:28:54 2005