Help with project

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Guest

Posted: Sun Feb 24, 2008 5:29 am

Hello. I am trying to create this:
http://www.clotilde.com/detail.html?prod_id=2236&criteria=bobbin+saver

except in a straight version, not round. I have a piece of 1/8-inch
diameter silicone tubing and a piece of 1/4-inch diameter silicone
tubing.

My question is: Is there a way to calculate how wide I should cut the
slit/opening so that the piece will grip different sizes?

Any information about this will be appreciated.

Regards,
Amy

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