[alt-photo] Re: Gum Bichomate used as a resist for metal printing

[Michael Koch-Schulte]

I think that wouldn't work -- in traditional intaglio at least -- as the 
gum would dissolve into the ferric chloride bath, both being soluble in 
water. Maybe air oxidation would work on steel but that could take quite 
a while. Maybe using a pinch of nitric acid in solution with something 
oily though. I've used gum arabic with nitric acid to mask/etch litho 
stones which is a water-oil process.

~m

On 2/5/2011 6:12 AM, Keith Gerling wrote:
> Some years ago I remember seeing some links to some metal work.  I believe
> the artist used gum to create a resist and then allowed corrosion to create
> the image on steel.  Does anyone have these links bookmarked?
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