26 Oct
2011
26 Oct
'11
10:57 a.m.
On Tue, 25 Oct 2011 20:03:45 +0100 (BST), ard at p850ug1.demon.co.uk (Tony
Duell) wrote:
Do *NOT* remove the band!! It protects the CRT from implosion by
putting
compressive stresses on the faceplate, thereby counteracting the tensile
stresses produced by the force of the air on it and thus allowing it to
stand more stress.
The same idea as pre-stressed concrete in other words. If you remove the
band you will seriously weaken the CRT.
/Jonas
> I was
referring to holding the faceplate on the CRT, not supporting the CRT=
> . I plan to replace the metal band, padding with e.g. strapping tape if ne=
> cessary. Does that make more sense? - Ian
It wworries me, I can tell you
that. That metal band is fixed ot the
glass, it's also deliverately very tight. Somehow it supports the screen
glass during an implosion, protectggn the viewer. It's not just a mouting
band for the CRT. 
27 Oct
27 Oct
12:54 p.m.
Do *NOT* remove the band!! It protects the CRT from
implosion by putting
compressive stresses on the faceplate, thereby counteracting the tensile
stresses produced by the force of the air on it and thus allowing it to
stand more stress.
The same idea as pre-stressed concrete in other words. If you remove the
band you will seriously weaken the CRT.
Presuambvly a CRT with the band removed is more likely to implode, due to
the fact that there are now more stresses in the faceplate. And even if
you put it back it'll not be correctly tensioned, so it won't do its job.
I agree with you. I'd not try to remvoe or refit that tension band.
-tony
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