Re: Gesso sizing (Katharine) Ooops Gelatine Mold

Katherine,

I have a nice floral gelatine mold that my mother used to make holiday salads
with... oooops wrong topic!

But seriously,,,,

1. What is the base or carrier for the gesso? Is it an acrylic? That
would seem to help with sizing, wouldn't it?

2. Since the print is being exposed to UV light, would that not kill off
the mold spores, or at least make them a little retarded? UV light is used in
water supply systems and air filters to kill mold spores, bacteria, etc, and I
would think the heavy dose given during printing should help...except where
the negative is very dense... maybe flashing the gelatine without dichromate
prior to coating & printing?

Best Wishes,
Mark I. Nelson
www.MarkINelsonPhoto.com
www.PrecisionDigitalNegatives.com
PDNPrint Forum @ Yahoo Groups

In a message dated 1/19/06 2:01:03 PM, kthayer@pacifier.com writes:

> This is an open question. Those of us who use this combination don't 
> harden it, and certainly there hasn't been anything in my gum 
> printing practice that dictates the hardening of the combination;  
> that is, the sizing works quite well without further hardening. But 
> I've also sized with unhardened gelatin without finding any practice-
> driven need to harden it, and have relied on the hardening it 
> receives in the gum printing process (somewhere I have demonstration 
> visuals to show that the gelatin is hardened by the dichromate in the 
> gum process) for hardening for purposes of retarding mold and such. I 
> don't know if this would be the case for the gelatin that's mixed 
> with the gesso, but I don't know why not either.
> Katharine
>
Received on Thu Jan 19 14:21:30 2006