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

Vic K2VCO k2vco.vic at gmail.com
Wed Jan 23 01:11:30 EST 2013

I tried some of the XYL's nail polish remover, which contains acetone -- it works! 
Tomorrow I'll get some pure stuff at the hardware store. Thanks to everyone who suggested 

On 1/22/2013 4:16 PM, Chris Wilson wrote:
>> 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.
> 23/01/2013 00:14
> If they use the same marker as here in the UK cellulose thinners gets
> it off. I am a race car engineer and I use a lot of aluminium in sheet
> and other forms, that's what works on ali sheet here. Good luck!

Vic, K2VCO
Fresno CA

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