Can I Super Glue A Loose Tube To It's Base?

[earache]

Is it safe/possible/foolhardy/whatever to flow some superglue into the base of a tube so as to hold the glass portion to the base? The tube works otherwise but the glass portion is loose in it's base.
TIA

[Gtr_tech]

Sure. Regular super glue is thin enough to "wick" into the tube base and get into the small spaces. Some accelerator is not a bad idea after it penetrates for a minute.

[Prairie Dawg]

Sure. Regular super glue is thin enough to "wick" into the tube base and get into the small spaces. Some accelerator is not a bad idea after it penetrates for a minute.

I use clear nail polish for the same task. I lay on a coat, drizzling it down into the base by wobbling the envelope around and working the brush. Then another coat after a few minutes, and then I prop it up and let it sit for an hour while I'm doing something else.

Superglue makes my eyes water so I avoid it when I can. A buck gets you a year's supply of nail polish at Walgreens. Come to think of it, I also use red (non metallic) for anti tamper lacquer, and black for touching up metal, among which is areas on vintage cameras where the finish has worn through. It's very good for that.

See, Goths were good for something.

[J M Fahey]

I'm afraid super glue (and most adhesives) will soften/crack/burn/bubble at typical tube envelope glass temperatures.
Yet, who am I to disagree?
Please post your results.

[Gtr_tech]

The most heat is concentrated from the center of the envelope (near the plate) and up from there providing the tube doesn't hang upside down. I've not had a problem with super glue breaking down under heat at a tube base....yet. You'd sure smell it if it did.

[stokes]

I've used super glue on various output tubes with good results.

[rf7]

Thanks for this post, I've got a NOS 6L6 waiting for this fix.