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Old 6th April 2007, 12:09 PM   #11 (permalink)
Kevin
Sappling
 
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Join Date: Mar 2007
Location: Ontario, Canada
Posts: 19
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Tim;
It allows the top to drop off the spar faster decreasing the bending moment on the spar.
I use an open face on those most of the time.

For real accuracy on the ground I use gunning sticks to mark the corners of the notch.
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