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| Home > Articles & Tips Index > Foam Cutting and Vacuum Bagging > Variable Tension Bow Design [Courtesy of Martin Brungard mabrungard "at" hotmail.com, November 2001] Martin's design provides easy control and consistency of bow tension, which can result in cleaner cuts and more consistent airfoil shape. Below is a link to an Excel worksheet containing a tab with bow tension calculations (so you don't have to do them by hand!), a page of notes, and the latest drawing of Martin's bow design. Martin Brungard's Foam Cutter Bow and Calculations (38 kB Microsoft Excel xls file)
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