Try acetone.
Glen, K9STH
Website: http://k9sth.com
________________________________
From: Vic K2VCO <k2vco.vic@gmail.com>
To: Amps reflector <amps@contesting.com>
Sent: Monday, January 21, 2013 1:53 PM
Subject: [Amps] How to get the blue markings off of aluminum stock
Well, I just finished the cover for my power supply. Removed the clear plastic
from the aluminum sheet, and it is beautiful -- except for the blue printing
that indicates the alloy, etc.
How do you get this off? I've tried 91% isopropyl alcohol and various
petroleum-based solvents without success. I would hate to use anything abrasive
because then I would have to polish the whole thing to make it look nice again.
I hope there is something I can buy at the hardware store!
I don't understand why the manufacturer didn't put the printing on the
unprotected side.
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