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

[henk thijs]

Keith,
Is this in your opinion a 'yes' to my question of using the PVA for both, just with a different dilution?
thanks,
Henk
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www.thijs-foto.com
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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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