This device is an invaluable aid to anyone who wants to draw fair curves but doesn’t have an extra pair of hands. It can be made from shop scraps and a few dollars’ worth of hardware. The device consists of a plywood holder with a fixed block on one end and a sliding block on the other connected with a length of 1/4-in.-dia. allthread. Wedged between the blocks is a bending blade that can be made from any springy, flexible material. Mine is a piece of Plexiglas. By tightening or loosening the threaded rod, you can fine-tune the bending blade in tiny increments. Jim Richey
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