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

[John Lyles]

The manufacturers of commercial equipment will remove it with abrasive action. Usually all sheet metal panels can be orbital sanded lightly to not only remove this but also the various tics and surface defects that they might pick up in handling. This then goes into Alodine or Anodize process before painting or not. Good off is a good idea I think. 
73
John 
K5PRO

> Message: 9
> Date: Tue, 22 Jan 2013 16:25:53 -0500
> From: "N3XX" <n3xx at charter.net>

> I would try "Goof Off" http://www.goof-off.com/
> Home Depot, Lowes, & many other places sell it.
> 
> 73,
> Tim - N3XX
> 
> ----- Original Message ----- 
> From: "Vic K2VCO" <k2vco.vic at gmail.com>
> To: "Amps reflector" <amps at contesting.com>
> Sent: Monday, January 21, 2013 2:53 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!
> >
>