Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ
The authoritative public forum
for Metal Finishing since 1989
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Nitric acid etching
I wish to mark mild steel using nitric acid. What can I use to coat the steel before scratching in my design.
Jim Morris- Somerset, England
2002
2002
Jim,
Presumeably you'd want to easily remove the 'coating' (but 'ee didn't zay zo, did 'ee naow!)
Consider ordinary tar or pitch. That you can remove with gas (petrol). Don't consider 2 component paints as they are a problem and a half to remove! For a greater accuracy in marking consider lacquer ... borrow some ladies nail varnish and try it out ... easily removeable with acetone ⇦this on eBay or Amazon [affil links] Warning! highly Flammable! .
Maybe (I dunno) you'd have better success with muriatic acid ⇦this on eBay or Amazon [affil links] than nitric.
Regards to Zomerset !
Freeman Newton [deceased]
(It is our sad duty to advise that Freeman passed away
April 21, 2012. R.I.P. old friend).
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