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

[Keith Gerling]

As i recall, the artist used gum for a resist, then immersed steel plates in
various corrosive agents to get different colors.  What I am looking for is
what those agents are.

Any ideas, Jack?  You're the metal expert!  What would be even better is if
you had any thoughts on how i could tarnish/blemish/colorize aluminum.  I
have loads of aluminum that I could use for this.

As for removing it, if it doesnt dissolve in one of the solutions, I can
always hit it with a blowtorch.




it just dawned on my that you're going to polymerise the gum with bichromate
which is of course going to make it insoluble in water. Your possibilities
for using an etch then broaden (I'd try high strength hydrogen peroxide
maybe). How do you remove the hardened gum after the etch though? ~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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