Glad your ok Tom, got me thinking now as there is a small crack in the screen on the "K".
I used to install plastic screens on car wash bays the plastic ones were 1/2 the price of glass even though we machined them to fit (4x8 ft) they were incredibly strong and never shattered as you have described.
Lou
I still have the pieces in a bucket - I'll take a pic & post it -
This screen was very thin compared to today's screens plus the age factor, I can understand how it would be brittle - I was in shock when it happened also very pissed at myself, at the time i didn't know if i could get a new screen made, that really bothered me.
it made a big racket - the kids & my wife came running out to the garage to see if i was still alive.
Hell to get old - stuff happens more often - I try to be more careful in the shop - tom