[Amps] Replacement of plate caps on glass tubes

[K6QD]

My appreciation to those who responded to my question.  I tried the furnace cement and it worked fine as predicted.
73 de Mike K6QD
  ----- Original Message ----- 
  From: K6QD 
  To: amps at contesting.com 
  Sent: Thursday, April 10, 2008 7:42 AM
  Subject: Replacement of plate caps on glass tubes


  I have some old glass tubes where the plate cap bond to the glass envelope has become loose; i.e. the cap is being held on by the soldered wire going through the glass envelope to the internal plate.  The solder joint from the wire connection to the plate cap is intact and the tubes are good, but the bond to the glass has failed over time.  Can the caps be unsoldered, re-bonded and re-soldered?
  Thanks for any help.  
  de Mike, K6QD