RE: In need of a vacuum tube

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Jonathan Peakall" <jpeakall@xxxxxxxxxxxx>

All,

>
> As for the center cap coming off, if the seal of the tube hasn't been
> broken, you should be able to re-solder the cap on carefully and secure
> it with epoxy suitable for use on glass.  Keep in mind that most 811A's
> are usually fairly old tubes, and the epoxy used to hold the top cap on
> can degrade with heat.


I've done just that. I used JB weld for the epoxy, it takes high temp well.
I let the epoxy cure overnight and the resoldered the cap. I have not
tested/used it since, but I'm sure it will work.

Jonathan
www.madlabs.info