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The original finish should be anodizing. To remove it, you have to remove the top layer that became a lot harder in the process. That is the reason why you need to clean it and blast it. There are chemical alternatives if you can't find a pressure blaster. SuperClean and Easy-OFF will "attack" the material. If you are VERY careful and don't leave the stuff on for too long, it can remove the finish. For SuperClean, neutralize with vinegar when done. Not sure if Easy-OFF is alkaline or acid...
Oven is the best solution. It's not the heat that warps it, it's the cooling-down.
Over at 200F should be good. When done, turn-off the oven, open the door a little (that little step) for about 30 seconds and then close it. Let the over cool down overnight.
If you have a convection oven, turn that on too. More even temperature.
You can cook motherboards at 385F without damage... I guess your receiver will be fine at 200F. Also, heatguns go WAY over 200F, usually around 500F.
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Originally Posted by Drake
Damnit, don't make me add "no discussing temporal paradoxes" to the rules or I'll go back in time and ban you last week.
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Last edited by Kos-Mos; April 22nd, 2012 at 20:57..
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