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Broken base key

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VinceT

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Broken base key
« on: 20 Jun 2022, 04:51 pm »
Long story short, someone broke the plastic base key off of one of my 6L6GC tubes. Can't find a matching replacement online. Is it acceptable to super glue the base key back on without affecting functionality or having any potential risks of issues? The rest of the tube appears to be fully intact.

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Tyson

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Re: Broken base key
« Reply #1 on: 20 Jun 2022, 05:17 pm »
Heat might make the glue come loose.
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bladesmith

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Re: Broken base key
« Reply #2 on: 20 Jun 2022, 05:20 pm »
Marine epoxy might be best..
I
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VinceT

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Re: Broken base key
« Reply #3 on: 20 Jun 2022, 05:32 pm »
Sounds like it's a goner

Great points all, thanks for responding
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jjss49

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Re: Broken base key
« Reply #4 on: 20 Jun 2022, 08:39 pm »
op

if you have another tube of the same type, refer to the good tube with the center pin, note orientation, mark where the key is oriented, then plug the tube lacking the pin into the amp using the same orientation - just draw a line on the bakelite base with permanent magic marker

not that hard...
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VinceT

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Re: Broken base key
« Reply #5 on: 20 Jun 2022, 08:48 pm »
Quote from: jjss49 on 20 Jun 2022, 08:39 pm
op

if you have another tube of the same type, refer to the good tube with the center pin, note orientation, mark where the key is oriented, then plug the tube lacking the pin into the amp using the same orientation - just draw a line on the bakelite bass with permanent magic marker

not that hard...

That is part of the question

I really didn't want to get into the whole story, but I had the amp in for repair. In the past someone broke the key off and the tube shorted and caused damage. I do not want that to happen again, so just overly careful I guess.
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FullRangeMan

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Re: Broken base key
« Reply #6 on: 20 Jun 2022, 08:54 pm »
Any photo ?
If the pins are not shorted it may run OK, maybe some microphonics.
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S Clark

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Re: Broken base key
« Reply #7 on: 21 Jun 2022, 01:34 am »
Quote from: jjss49 on 20 Jun 2022, 08:39 pm
op

if you have another tube of the same type, refer to the good tube with the center pin, note orientation, mark where the key is oriented, then plug the tube lacking the pin into the amp using the same orientation - just draw a line on the bakelite base with permanent magic marker

not that hard...
Yep, just mark the tube with nail polish or white out to get the orientation right 
But go with your first thought... superglue.  It's stable, doesn't soften with heat.  It will last as long as the tube. 
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Photon46

Re: Broken base key
« Reply #8 on: 21 Jun 2022, 11:24 pm »
High Temperature epoxy is what I used when I had a base key break.



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FullRangeMan

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Re: Broken base key
« Reply #9 on: 21 Jun 2022, 11:43 pm »
If the shock was strong enough to break the baquelite base maybe it could have broken something else inside the tube.
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rotarius

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Re: Broken base key
« Reply #10 on: 22 Jun 2022, 12:42 am »
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VinceT

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Re: Broken base key
« Reply #11 on: 22 Jun 2022, 01:59 am »
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