Hi Don, The original stuff is probably some latent carcinogenic concoction anyway, and best stayed away from (heck, what ISN'T a carcinogen anymore, anyway...?! Hi Hi).
Back in "...ye olden golden daze", I seem to recall reading on the instruction label for Lepage's-brand epoxy glue that if one is to subject the stuff to high heat, it's best to use a TWO to one (as opposed to one to one) ratio / blend of epoxy resin to hardener. Either way, the stuff is practically indestructable, as you say... BTW, to secure loose tube bases to glass envelopes, I still stand by my method of "weeping" the watery kind of "crazy glue" along the seam of the base (where glass meets plastic). I know that some experts on the list claim such a fix will surely spell the demise of said tubes, but someone hasn't been telling my tubes that... As a result, I have dozens of them --- in storage, as well as in active duty --- that have been repaired this way, going back some 20 years now... ~73!~ Eddy VE3CUI - VE3XZ ********************* ----- Original Message ----- From: "D. Chester" <[EMAIL PROTECTED]> To: <amradio@mailman.qth.net> Sent: Saturday, August 25, 2007 12:29 PM Subject: RE: [AMRadio] 810's > > www.cotronics.com/vo/cotr/index.htm > > Plenty of hi-temp adhesives to 4000F > > Thanks for the info. I bookmarked that one. > > I have used both JB Weld (the slow curing version) and plain "Two-ton > crystal clear" epoxy to glue plate and grid caps. > > I once had a 810 that I used in the modulator. I glued the plate cap with > regular crystal clear epoxy. It never let go, but the clear epoxy gradually > turned amberish and finally completely black and opaque, but the plate cap > stayed solidly attached. I think I rotated that tube out of service and > still have it amongst my spares. > > Does anyone know what the original adhesive used on tubes is? Everything > from small receiving tube bases and the plate caps on transmitting tubes > seems to be glued on with the same brownish cement that appears to contain > air bubbles. > > But given the very common problem of loose bases and caps, maybe the > original stuff wouldn't be the best choice for repair even if it were > available. > > Don k4kyv > > ______________________________________________________________ > AMRadio mailing list > List Rules (must read!): http://w5ami.net/amradiofaq.html > List Home: http://mailman.qth.net/mailman/listinfo/amradio > Help: http://mailman.qth.net/mmfaq.html > Post: mailto:AMRadio@mailman.qth.net > To unsubscribe, send an email to [EMAIL PROTECTED] with > the word unsubscribe in the message body. ______________________________________________________________ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
