[Boatanchors] Has anyone ever cut the glass top off a miniaturetube to re-use the base?

[Fuqua, Bill L]

  I had been a subscriber for years. what is this about a fraud detection check?
73
Bill wa4lav

________________________________________
From: Boatanchors [boatanchors-bounces at puck.nether.net] on behalf of Fuqua, Bill L [wlfuqu00 at uky.edu]
Sent: Friday, August 19, 2016 1:42 PM
To: Glen Zook; Paul Kraemer; Bob Groh; boatanchor; Boatanchors at mailman.qth.net
Subject: Re: [Boatanchors] Has anyone ever cut the glass top    off     a       miniaturetube to re-use the base?

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  I did a similar thing years ago to make a connector for a probe for a B&K (Dutch) frequency selective volt meter.
I got a socket and removed the metal mounting piece around it, poked in some appropriate sized copper wires as far as I could.
Wrapped some tape around it to make a tubular shell as a mold.Then I trimmed them at a some length and put some lubricant inside as mold release.
Then I poured in a tiny bit of thin oil being careful to keep it off of the wires so that the epoxie that pour in later does not stick to the socket but does stick to
the wires. I then pour in pour epoxie into the mold and lastly plug a socket on to the ends of the wires sticking out to keep them aligned.
  Let it cure, remove tape and unpluged it from the sockets.
  73
Bill wa4lav

________________________________________
From: Boatanchors [boatanchors-bounces at puck.nether.net] on behalf of Glen Zook via Boatanchors [boatanchors at puck.nether.net]
Sent: Friday, August 19, 2016 10:27 AM
To: Paul Kraemer; Bob Groh; boatanchor; Boatanchors at mailman.qth.net
Subject: Re: [Boatanchors] Has anyone ever cut the glass top off        a       miniaturetube to re-use the base?

It is also possible to make a plug from a 9-pin or 7-pin molded type miniature tube socket.  Put suitable gauge solid wire in each of the tube pin positions and then solder the wires in place.  Trim the wires to the proper length.


Of course, remove the sheet metal bracket that is used to hold the socket to the chassis.  This makes for a suitable plug that doesn't look "half bad"!  I have done this a number of times and the plugs work very well.

 Glen, K9STH
Website: http://k9sth.net

      From: Paul Kraemer <elespe at lisco.com>
 To: Bob Groh <bob.groh at gmail.com>; boatanchor <boatanchors at puck.nether.net>; Boatanchors at mailman.qth.net
 Sent: Friday, August 19, 2016 9:12 AM
 Subject: Re: [Boatanchors] Has anyone ever cut the glass top off a miniaturetube to re-use the base?

Bob
I have done that to obtain 7 pin plug.  My poor experience using the "all
you gotta do" glass cutting tricks I went a different way---used the cut off
wheel on a Dremel.  For safety I put the tube and cutter in a heavy plastic
bag and that way all the debris was safely bagged and minimized any risk to
my eyes if something went wrong. The cut was nice and clean and the side of
the disc ground it smooth.  Soldering to the pins requires scraping them
clean and bright and using a good flux like Rubyfluid.  Filling the "plug"
with epoxy after soldering wires get you there.
Also, the real deal plugs do show up on ebay once in a while, 9s more common
than 7s.
Making circuit board plugs is also a possibility but you need to solder
suitable pins to some pretty small pads and then not unsolder them when you
connect to the back ends of the pins.  It works but not a quantity
producible solution by any means---unless you just sell the circuit board
and loose pins and let the buyer deal with it.
Too bad those Vector plugs of the 70's are history.


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