I don't know about "The old days" but going back 45 years every airplane I
worked on had Lexan windows. The short answer to this question is, Don' use
Plexiglas. The rules tell you not to. Inspectors will tell you so if they
know you did. And it's bad to use for this. Would you use plate glass for
your front door.? Or windshield? No, that's why they have laminated safety
plate and tempered glass. An aside, once in the Army somebody decided we
should take a 50 caliber machine gun and give everybody a few shots into the
dessert. Someone brought a thick piece of "Bullet proof Glass" which I think
was Lexan and came out of some aircraft. It was propped up about 25 yards in
front of the Browning and a round touched off. Pretty much disappeared. I
guess the "bullet proof" nomenclature was just for building confidence.
----- Original Message -----
From: "Benn" <karhu@california.com>
To: <land-speed@autox.team.net>
Sent: Friday, April 17, 2009 5:59 PM
Subject: Re: [Land-speed] Drilling Plexiglass
> Didn't fighter jets use plexi almost forever in the old days? (And I got
> my "tube" o' goodies, but no rule book, FWIW).
> Benn
>
>
> ----- Original Message -----
> From: "J.D. Tone" <gmc6power@earthlink.net>
> To: <land-speed@autox.team.net>; "Skip Higginbotham" <saltrat@pahrump.com>
> Sent: Friday, April 17, 2009 5:24 PM
> Subject: Re: [Land-speed] Drilling Plexiglass
>
>
>> I do not believe "plexiglass" has ever been sold as shatter
>> resistant...I see the word SHALL and that's postive enough for me. IMO, I
>> do not believe its open for interpretation.
>>
>>
>>
>>>
>>> JD,
>>> Paragraph 3.U suggests LEXAN but does not appear to disallow any
>>> plastic..........to what do you refer? Rich is right, LEXAN is much more
>>> forgiving.
>>>
>>> Thanks,
>>> Skip
>>>
>>>
>>> At 07:03 AM 4/17/2009, you wrote:
>>>>I'm not sure but I think "plexiglass" in not allowed. I believe "Lexan"
>>>>(GE Patent) cast acrylic, or certain Polycarbonates (SP?) is allowed as
>>>>Rich says.
>>>> >
>>>> >Most windows in my car are Lexan which is much more forgiving.
>>>> When drilling
>>>> >Plexiglas (cast Acrylic) I use center or spotting drills. Works well.
>>>> >RF
>>>> >----- Original Message -----
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