22 Oct
2011
22 Oct
'11
12:44 p.m.
If one wanted
real implosion protection, it might be worth
investigating some of the mylar window films made for the purpose of
containing fragments:
http://windowfilmdepot.com/protection.htm
That's an interesting idea!
I wonder how critical it is to fill the gap between the CRT and faceplate
with something, though? For the HP 250 it was a non-functional display, but
on a working screen will there be problems if there's any air trapped in
there (blooming or reflections off the back of the faceplate, for example)
There might be slight reflections, but no worse than with the separate
safety glass used in 1950's TV sets.
In the case of your HP250, even thoguh you are not running it it could
still be an implosion risk without the correctl-bonded faceplate.
I don't know how the faceplates are/were normally
stuck in place at
assembly - did they apply bonding compound to the front of the CRT and then
press the plate into it, or did they suspend the plate in front of the CRT,
seal around the edges, then pour/inject the bonding compound into the
resulting gap?
ALmost certialy they applied the bonding stuff to one of the parts (which
one I can't say) and then put them together.
-tony