[Milsurplus] Re-attaching vacuum tube envelops to their bases

[Scott Johnson]

I use Gorilla Glue, which I assume is similar, and have very good results.
Scott
----- Original Message ----- 
From: "Larry Christopher" <urgent at telus.net>
To: <milsurplus at mailman.qth.net>
Sent: Thursday, November 04, 2004 10:57 AM
Subject: [Milsurplus] Re-attaching vacuum tube envelops to their bases


> Hi everyone,
>
> I am new to your group,.  although I don't know much about military 
> surplus.
> I collect Tektronix tube oscilloscopes from the 50's and 60's, so I am 
> sure
> many of the issues and problems will be the same.
>
> In regard to reattaching tube bases, I have just finished a project which 
> required that
> I remove about 40 crt's from 40 scopes and reattach the base to the glass 
> of the tube.
>
> In order to do this, I used:
>
> Elmer's  PROBOND Polyurethane glue.
>
> I stand the tube on its base and run a bead of the glue around the joint. 
> Sometimes, if the old
> glue is reallly flaky, I use a sharp instrument like a dentist's pick to 
> clean out some of the old
> glue. But it doesn't seem to be a requirement for a good bond.
>
> Once the bead is all around the tube, the tube needs to be kept upright on 
> its base overnight. The
> glue foams up and fills the joint nicely. After all has hardened, I use 
> and Exacto knife and sometimes
> a razor blade to trim the bead flush with the base of the tube. If there 
> are gaps that would permit
> moisture to get into the tube base, I redo the glue operation to seal 
> them.
>
> These tubes have quite a bit of voltage on some of the base leads, and so 
> far I have had no problems.
>
> Any questions, please email me.
>
> Larry Christopher
> Surrey BC Canada
>
>
> ______________________________________________________________
> Milsurplus mailing list
> Home: http://mailman.qth.net/mailman/listinfo/milsurplus
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Milsurplus at mailman.qth.net