REFLECTOR: Tips on stop drilling for cracks in the wind screen

[John Overman]

Don't ever stop drill cracks. The drill bit creates
ridges inside the hole which are stress points that
the hole was supposed to eliminate, thus allowing the
crack to continue.
Whenever you want to make a hole in plexi or acrylic,
heat a rod (drill bit?) of the appropriate size till
you  see a redish color then plunge it thru the
plastic. It makes the hole and cauterizes itself.
Works everytime.
                          John
--- Christopher Martin
<christophercmartin at earthlink.net> wrote:

> After seven years of flying and over 700 hours I
> have developed 2 cracks in
> the lower, pilot side of the front wind screen. I
> stop drilled each with a
> 1/16th inch drill and it appeared to work. After
> about 40 hours I saw that
> both cracks have continued past the stop hole by
> 1/8th inch. I have now
> drilled another stop hole at each extended crack.
> 
> Does anyone have any advice on this?
> 
> 
> Christopher Martin
> christophercmartin at earthlink.net
> EarthLink Revolves Around You.
> 
> 
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