I generally check the tightness of fit of each pin before inserting a
tube into a socket. I have a routine method of loosening the grip of each
socket fork on the
tube pin. I use a tapered solder probe to loosen them up. Then I
check each one. Then I use a junk tube at first to make sure insertion and
extraction force is acceptable.
If I go too loose on any socket fork, then another pointy tool can be
inserted along side to tighten it up a bit. I adjust my sockets so they are
gentle on the tubes.
No busted tubes after learning this THE HARD WAY.
-Chuck
---- Original Message ----
From: "David Forbes" <[email protected]>
Sent: 8/29/2022 9:50:33 PM
To: "NeoNixie" <[email protected]>
Subject: Re: [neonixie-l] Is there any merit to the claim that ceramic
tube sockets crack tube pins?
Back in the good old days when sockets were made by military
suppliers, they were designed well and made according to all the design
details. Later, these good sockets got copied by manufacturers who didn't
understand what details to copy, so they got progressively worse over the
years.
Fast forward to Chinese socket shaped objects. Their pins don't
have the design subtleties, the quality materials or the special processes that
were used by companies such as Cinch to make good sockets.
Of course, old tube sockets are often oxidized if available at
all. And good luck finding IN-18 sockets that are well made.
You can buy machined socket pins that have enough 'give' to not
crack the glass. They're not cheap. See Mill-Max.
On Mon, Aug 29, 2022, 2:45 PM Audrey
<[email protected]> wrote:
Some people say ceramic sockets crack tubes at
the pin and cause them to go to air and that you should use bakelite sockets
Some of my friends say they've lost
tubes to it, some of them say they've socketed countless tubes without issue.
Ive got some ceramic sockets and some
9-pin digivacs and biquinary nixies I'd rather not kill. So what's the deal?
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