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Forum Locked90 degree corner

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Mike Stinger View Drop Down
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Joined: 17 July 2009
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    Posted: 27 July 2009 at 6:17pm
I am making a cover for a hard fiber glass dinghy out of sunbrella. The boat has 90 degree corners. I installed a templet and found that at all corners i get a pucker. Should i cut a wedge out and sew it together?   
 
p.s.  The sunbrella hangs over the sides about 2".
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jim grant View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jim grant Quote  Post ReplyReply Direct Link To This Post Posted: 28 July 2009 at 9:27pm
The pucker usually results from trying to sew a 90 degree corner -- it can't be done! There will be a radius no matter how careful you are. So you cut a 90 degree angle in the plate and then sew the boxing on with a radius (even though it might be very small) -- the result is the pucker! Try cutting the plate with just a little radius (1/4 inch or so) and see if the pucker doesn't go away.
 
You may be just sewing a 45 degree angle across each corner at a 2 inch depth to create your 'boxing' (technically it is a 'skirt' here) -- this, too, will create a bit of a pucker but it is usually not enough to worry about (I don't).
Jim Grant
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