From: hwabnig@.-   
      
   On Thu, 3 Sep 2015 11:26:06 +0200, 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!   
      
   Glass to Aluminium must leave room for temperature expansion.   
   Use small dots of glue.   
   Expansion coefficients differ a lot.   
      
   We used 2 component Araldite to glue mirrors on anodized Aluminium.   
      
      
   Elastic glue, silicone glue is not possible?   
      
      
   w.   
      
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