Your long oval is correct.
Wheel the two long sections edge-in.
Then the two shorts, but they go further in. Edge - in.
So your stretch is in a taper, thinnest at the edge tapering to zero near the oval.
__________________
Kent
http://www.tinmantech.com
"All it takes is a little practical experience to blow the he!! out of a perfectly good theory." --- Lloyd Rosenquist, charter member AWS, 1919.
Last edited by crystallographic; 09-15-2015 at 10:02 PM.
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