Tubes Asylum

• EPOXY is the best! <nt> - MaciekP 13:16:40 03/19/04 (0)
  In Reply to: Best glue to fasten loose base of tube? posted by Len_ on March 14, 2004 at 19:02:49:

  Maciek
  
  

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• Silicone is good to 230C. - Mark Kelly 23:05:00 03/14/04 (0)
  In Reply to: Best glue to fasten loose base of tube? posted by Len_ on March 14, 2004 at 19:02:49:

  I third the recommendation of Silicone. Standard Silicone has a temperature tolerance of 230 C which is way hotter than your base gets - some hard glass transmitting V/Ts get to 300 C or so adjacent to the plate.
  
  

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• Re: Best glue to fasten loose base of tube? - Ed Sawyer 19:51:54 03/14/04 (0)
  In Reply to: Best glue to fasten loose base of tube? posted by Len_ on March 14, 2004 at 19:02:49:

  Second the choice of Silicone - it's definitely better than superglue - I have tried both, cyanoacrylate (superglue) does not work very well, esp. on older tubes where the base/glass interface is not perfect.

  Get the flowable silicone, which is often sold @ autoparts stores in a small tube, designed to flow into the gap between your cars body/windshield frame and it's windshield to cure leaks in that area. works great on tube bases, easy to clean up, and invisible when done right.

  -Ed
  
  

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• I have used super glue for a few years on some tubes that get. . - John PA 19:48:24 03/14/04 (1)
  In Reply to: Best glue to fasten loose base of tube? posted by Len_ on March 14, 2004 at 19:02:49:

  very hot and have had great success. It flows in nice and does not have the mess that anything else has. Also the tube does not look like it has been repaired so they have a nice appearance.

  There is high heat super glue and having tried both I have found the regular to work fine.

  ja in warm and clear, Tucson, AZ
  

  The Elaborate DAC=55/76 Preamp=Six Pac=Newform Research 645
  
  

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  • My Experiences More Like Yours.... - Todd Krieger 20:16:25 03/14/04 (0)
    In Reply to: I have used super glue for a few years on some tubes that get. . posted by John PA on March 14, 2004 at 19:48:24:

    Never had a problem w/ Super Glue or Crazy Glue...
    
    

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• don't use superglue it is really from the Bizarro world and not super at all - Dave sK 19:24:50 03/14/04 (0)
  In Reply to: Best glue to fasten loose base of tube? posted by Len_ on March 14, 2004 at 19:02:49:

  the only thing that might work is some form of epoxy. some stuff like JB Weld. superglue is useless for any long term bond where heat and mechanical stress are involved.
  
  

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• Re: Best glue to fasten loose base of tube? - snowden 19:24:48 03/14/04 (0)
  In Reply to: Best glue to fasten loose base of tube? posted by Len_ on March 14, 2004 at 19:02:49:

  I've used superglue for years, especially on the old 45's and 2A3's. I've never had a repeat of the problem with tubes glued this way. Just make sure you hold the base firmly in place with the glass and don't move your fingers... not a pretty sight having a 300b glued to your thumb and especially difficult when the tube warms up!

  Alex
  
  

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• Re: Best glue to fasten loose base of tube? - Steve O 19:24:21 03/14/04 (0)
  In Reply to: Best glue to fasten loose base of tube? posted by Len_ on March 14, 2004 at 19:02:49:

  My favorite adhesive for tube bases is silicone RTV sealant/adhesive. Most versions are very heat resistant, flexible, available in various colors and the stuff adheres to glass extremely well. It also fills gaps better than most adhesives...typical superglues must be used with relatively small gaps.
  
  

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