From: rrllff@yahoo.com   
      
   On Thursday, September 3, 2015 at 5:26:07 AM UTC-4, Fitzgerald wrote:   
   > We are having some difficulties gluing to black anodized aluminum; most   
   > likely caused by the sealing process that closes the pores at the end of   
   > the anodisation process.   
   >   
   > I'm looking for hints/tips on what type of anodisation process and/or   
   > glue to use:   
   >   
   > - What type of acid do you use for anodizing? Standard sulfuric acid   
   > anodizing (Type II)?   
   > - What layer thickness do you specify?   
   > - What kind of dyeing do you use? Organic dyes or electrolytically   
   > deposited?   
   > - What kind of sealing process do you specify? (hot deionized water?)   
   >   
   > - What type of glue do you specify? (Epoxy / Silicon RTV?)   
   > - Any particular recommendation for a brand / part no.?   
   >   
   >   
   > Many thanks!   
      
   Why are you doing this?  Is the part a mirror or lens?  What's the geometry?   
      
   Normally one doesn't glue directly onto an anodized or painted surface.   
      
   http://www.richardfisher.com   
      
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