Re: GUM-PVA-COLD preshrink

Gawain Mead Weaver wrote:
>
> This is an often confused abbreviation. Mowiol is a polyvinyl alcohol
> (sometimes abbreviated PVA, though I prefer PVOH for clarity). Mowilith
> is a polyvinyl acetate (similar stuff as in Elmer's glue, etc), but
> that's not what the reference is too.

Thanks for clarification, Gawain. Just a couple of weeks ago I made this
very mistake; I wasted several bucks buying a vial of "PVA glue" in a
local crafts store to do some gum experiments with, assuming that the
PVA meant Polyvinyl alcohol, since I'm used to seeing it referred to
this way in the literature about crosslinking, and my chemist colleague
refers to it simply as PVA. But when I got this glue home and tried to
print with it, it simply refused to mix with the dichromate, and then I
realized that it must be polyvinyl acetate. (But I'd always thought that
the stuff in Elmer's glue was polyvinyl alcohol...?)
Katharine

>
> Gawain
>
> ----- Original Message -----
> From: Sam Wang <stwang@clemson.edu>
> Date: Tuesday, May 24, 2005 12:37 pm
> Subject: RE: GUM-PVA-COLD preshrink
>
> > Hi Keith,
> >
> > Thanks for saying about "selling". Selling is selling.
> >
> > Is MOWIOL similar to the PVA as in Elmers School Glue? I've used
> > the latter and found it to be intriguing to use - but the contrast
> > seems extremely high. So perhaps that's why the images are built
> > up in stages? And with enough passes, you get a relief? With such
> > hard-edged processes, I suspect you can thicken the emulsion and
> > get relief more easily.
> >
> > I regret that we haven't met. Sandy and Mark have both told me
> > about your interesting work.
> >
> > Best,
> > Sam Wang
> >
> >
> > >Actually, the guy is pretty good:
> > http://www.lagalerie.be/jeanjanssis/>He's got some witty stuff
> > here and there are some shots of him at work.
> > >What I find intriguing is that he says that he work acquires a
> > relief as
> > >the coats are added. Did you see an actual relief in his work?
> > I have
> > >tried all kind of things to make that happen and have failed. Please
> > >keep us informed about your experiences with MOWIOL. I'm intrigued. 
> > >
> > >I would caution you against placing a premium on whether a person
> > >"sells" in determining their expertise. I "sell", too. Not nearly
> > >enough, mind you, but I still wouldn't call myself an expert. 
> > >
> > >Keith
> >
Received on Tue May 24 11:33:47 2005