20 Sep
2014
20 Sep
'14
3:12 p.m.
On 09/19/2014 01:51 PM, Tony Duell wrote:
I am not so sure. I don't think that 2 sheets of normal glass would be as
safe as laminated glass for a car windscreen, for example. I don't know
if the outer faceplate is enoguh to stop the fragments of CRT, and I do
not intend to find out by experiment. I do feel that the adhesive
between the 2 layers does help to keep the bits together if the CRT
implodes, though.
-tony
AS I understand it, the is due to the decay fo
the bonding 'glue' between
the 2 layers of the CRT faceplate. The direct vision tubes (no separate
implosion guard) have a 2-panely faceplate like a car's laminated
windscreen. If the glass breks it will not fly everywhere.
I've heard it suggested that the protective faceplate be reattached
using foam tape around the edges to space it a small distance from the
CRT face. While not the original design, it at least affords some
protection should the CRT envelope fail.