[Amps] making aluminum heat sinks black

[mike kendall]

Hello,
    Just recieved a large 1foot long aluminum heat sink off ebay.  I read that it will work much more efficiently if painted black on one web page.  Any suggestions on the right kind of paint that will stick and not flake off and if it is worth making it black instead of leaving it as bare aluminum?
  73,
  Mike Kendall
   

 		
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