[Land-speed] Drilling Plexiglass

Skip Higginbotham saltrat at pahrump.com
Fri Apr 17 10:05:28 MDT 2009


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 -----
> >
> >
> >
> >> There are many Plexiglas windscreens in LSR. That material is always at
> >> risk
> >> of cracking when drilling. To lower the risk you never drill it cold,
> >> always
> >> ensure it is warm first. The video shows why a drill causes a cracking
> >> problem and how to modify it to lower the risk.
> >> http://www.eaa.org/video/homebuilders.html?videoId=19802261001


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