[alt-photo] Re: PVA for SIZE & GUM ?

[Keith Gerling]

Henk,

Yes.  Mowiol is PVA and it is used.  Gloy, a glue available in the UK has
been used successfully for ages and I believe it is PVA with some coloring
agent.

I've ordered some PVA wood glue and will be testing it for size and as a
substitute for gum in the near future.

Keith





On Thu, Mar 4, 2010 at 11:44 AM, henk thijs <henk.thijs at hetnet.nl> wrote:

> Keith,
> Is this in your opinion a 'yes' to my question of using the PVA for both,
> just with a different dilution?
> thanks,
> Henk
> ------------------------------------
> www.thijs-foto.com
> ------------------------------------
>
> On 4 mrt 2010, at 18:24, Keith Gerling wrote:
>
> > Paul,
> >
> > I think PVA size is nothing but diluted PVA glue.  The size looks a
> little
> > on the thin side to use as a substitute for gum in an emulsion, but the
> > thicker glue seems to work.
> >
> >
> >
> >
> > On Thu, Mar 4, 2010 at 10:56 AM, Paul Viapiano <viapiano at pacbell.net>
> wrote:
> >
> >> Henk...
> >>
> >> There's always been some confusion over this on this particular list,
> since
> >> some substances known as PVA (glues, etc) have been used by
> experimenters to
> >> act as the colloid, as gum arabic serves in the process.
> >>
> >> However, the PVA size that we have been adopting is a different animal.
> >> Gamblin is the only brand I've seen and the only one I've used. It is
> very
> >> liquid-y, much like the consistency of water or milk. It is sold mainly
> as a
> >> size in the preparation of linen and canvas for subsequent oil painting.
> >>
> >> Jim Larimer and Steve Dowell first mentioned this product and I started
> >> working with it, since I was looking for something that didn't involve
> >> formaldehyde, glut or glyoxal.
> >>
> >> I would not try using this product as a gum arabic substitute. I have a
> >> bottle of glue here labeled "PVA adhesive" for bookbinding and such, but
> the
> >> product we are talking about is called "PVA size", two totally different
> >> things for our purposes and intents.
> >>
> >> Paul
> >>
> >>
> >> ----- Original Message ----- From: "henk thijs" <henk.thijs at hetnet.nl>
> >> To: "The alternative photographic processes mailing list" <
> >> alt-photo-process-list at lists.altphotolist.org>
> >> Sent: Thursday, March 04, 2010 8:23 AM
> >> Subject: [alt-photo] PVA for SIZE & GUM ?
> >>
> >>
> >>
> >> Dear List,
> >>> Made curious about the PVA discussion (I remember threads in 2007 a.o.
> >>> Katharine and David) about sizing i.s.o. gelatine and
> glyoxal/formaldehyde.
> >>> But some years ago i mentioned the belgian gummist Jean Janssis ( very
> >>> impressive gumprints of about 80 to 100 cm), he told me he used MOWIOL
> (PVA
> >>> 8-88) from Kremer  Pigmente not for sizing but in stead of gum arabic.
> >>> He gave me some data, i made some tests, and yes , it works; it was a
> bit
> >>> messy, and i preferred to work with gum arabic.
> >>> My question is : can we use this PVA stuff for sizing and
> gum-dichromate ?
> >>> regards,
> >>> Henk
> >>>
> >>>
> >>>
> >>> ------------------------------------
> >>> www.thijs-foto.com
> >>> ------------------------------------
> >>>
> >>> On 4 mrt 2010, at 17:03, Jeremy Moore wrote:
> >>>
> >>> Dan,
> >>>>
> >>>> If you're in a college town check out the art store the students
> >>>> frequent.
> >>>> They sell the 32oz Gamblin PVA Size at the unaffiliated school art
> store
> >>>> here for $19.99, which is cheaper than I have been able to find it
> >>>> online--I
> >>>> believe Jerry's is right over $20 (plus shipping, though I guess I
> have
> >>>> tax
> >>>> to deal with). One of the local profs does use this stuff in his
> classes,
> >>>> though, so that may be the reason why we seem to have it in abundance.
> >>>>
> >>>> -Jeremy-
> >>>>
> >>>> On Thu, Mar 4, 2010 at 9:39 AM, Diana Bloomfield <
> >>>> dhbloomfield at bellsouth.net
> >>>>
> >>>>> wrote:
> >>>>>
> >>>>
> >>>> Dan,
> >>>>>
> >>>>> I've used only the Gamblin PVA, and most art stores sell it.  We have
> a
> >>>>> Jerry's Artarama here,  but you could just order it online.  I think
> >>>>> Jerry's
> >>>>> is the lowest price I've seen, but even my small local art store here
> >>>>> sells
> >>>>> it, too, which is more convenient, but not as inexpensive.  Wherever
> you
> >>>>> are, check out your local art supply store, or just order it online.
> >>>>>
> >>>>> Diana
> >>>>>
> >>>>>
> >>>>> _______________________________________________
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