retouching black anodised heatsinks

[Bakmeel]

Anyone knows a good method for repairing small damages in black anodised heatsinks? I mean to make the damage black again (e.g. a scratch).

Permanent marker appears to leave a purple "haze" on the aluminium, or maybe you just need the right brand.

Thanx
Bakmeel

 

[mike.m216]

Perhaps some black automotive touch up paint?

 

[Bakmeel]

Maybe if you make it a bit more liquid, so that it wont leave a "layer" of paint on the aluminium... Thanx mike!

 

[Geek]

Hi,

Paints like enamel based auto touch-up will act as an insulating blanket and reduce efficiency far worse than the scratch.

For cosmetic touchup, check out cold blueing for aluminum at a gun store. That stuff also doesn't kill heat dissipation properties, but increases it.

Cheers!