U of S | Mailing List Archive | alt-photo-process-l | Thank you for the alt-list and PVA size

Thank you for the alt-list and PVA size


  • To: alt-photo-process-l@usask.ca
  • Subject: Thank you for the alt-list and PVA size
  • From: francis schanberger <frangst@gmail.com>
  • Date: Wed, 11 Nov 2009 15:35:15 -0500
  • Comments: alt-photo-process mailing list
  • Delivered-to: alt-photo-process-l-archive@www.usask.ca
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Gordon,

Sorry to hear about what U of S did to your position. This list has been an incredible resource for getting re-immersed in gum. Don't picture that!

Inspired by the discussion of alternatives to gelatin sizing I have incorporated Golden's PVA size into a one color (and multi-color) assignment for my alt photo I class.

My question is: Has anyone done test to determine if PVA sizing is needed for each layer (coat / exposure) of gum? I was under the impression that because of the dilution (1:2) or because it is water based that long soaks in water would strip away enough of the PVA to allow staining to occur.  After observing how stubborn PVA adheres to the plexiglass I am coating on, I am wondering if extra coats are needed.

I am just foam brushing on the PVA size, 1:2, onto BFK  Rives.

-francis schanberger





--
francis schanberger

www.frangst.com