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[Amps] How to get the blue markings off of aluminum stock

To: Amps reflector <amps@contesting.com>
Subject: [Amps] How to get the blue markings off of aluminum stock
From: Vic K2VCO <k2vco.vic@gmail.com>
Date: Mon, 21 Jan 2013 11:53:11 -0800
List-post: <amps@contesting.com">mailto:amps@contesting.com>
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.

--
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/

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