mikeschn wrote:So how thick would the lexan have to be to make my tear bulletproof?
Mike...
48Rob wrote:Hi Chris,
You may well be right, having been in the business, but what I understand is that plexiglass is poly(methyl methacrylate) a thermoplastic polymer.
And Lexan is Polycarbonate.
Plexiglass tends to shatter/crack more so than Lexan.
The names are used interchangeably, rather like "restored" and "repainted".
They are similar, and look the same on the surface, but are different underneath.
Lexan is softer than plexi and scratches more easily, but is stronger.
Lexan is used for bullet proof windows.
Rob, who isn't an expert, but who did study hard before choosing the material for the trailer windows.
doug hodder wrote:If you want bulletproof....you can always get kevlar cloth and do up your sides with that and epoxy...don't know how it would work, but that cloth is available for boat building...but I'm sure that there is more science involved than a layer of kevlar....Doug
Larwyn wrote:I made a temporary replacement window with a hole in it for an air conditioning unit not so long ago. It was a 1/4" sheet of plexiglass/lexan dont know which.
I scored it deeply and it snaped cleanly for the outside straight cuts. The radiused corners and inside cutout for the ac unit I did with a fairly coarse wood cutting blade in a variable speed jigsaw (used the lowest speed). The cuts all came out good enough, touched em up with sandpaper. Where the trouble came in was drilling holes around the perimeter, several of them cracked out the side as the bit broke through. I still do not know how to drill a hole in that stuff with confidence. Maybe some of you experts can enlighten me.........??
Chris wrote;
Rob, I don't remember commenting on Lexan...
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