photo etch lino plates

Hi:

I had some time to play around with my oven-cleaner photo etching of
linoleum blocks over the weekend.

First I ended up not using oven-cleaner - all of the stuff we had was
labelled as non-toxic non-corrosive. I ended up using Caustic Soda(NaOH)
it etches lino blocks very well. I did a test by rubbing some wax on a
section (to make a resist) and etching it. It worked great.

I then tried to make a photo sensitive resist. No success. I tried gum ,
gelatin and "white glue" each mixed with dichromate. exposed each to UV
light to harden them. The caustic soda "ate" all these resists up and
etched the entire plate.

I think I will see if I can find a milder etchant.

If I can get this working before Christmas I'll use it for the Christmas
exchange.

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Gordon J. Holtslander Dept. of Biology
holtsg@duke.usask.ca 112 Science Place
http://duke.usask.ca/~holtsg University of Saskatchewan
Tel (306) 966-4433 Saskatoon, Saskatchewan
Fax (306) 966-4461 Canada S7N 5E2
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Received on Mon Oct 1 11:36:41 2001