[Land-speed] Drilling Plexiglass

[John Burk]

I've drilled quite a bit of the stuff . If the drill goes into fresh wood 
every hole and the plexi is clamped to the wood it can't grab as it breaks 
through .



> 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
>
>
>
>   -Elon
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