![]() ![]() Small chisel or rotary tool with small straight router bit.Small projectile such as a small rubber ball.Trigger: One 5/16-inch-diameter, 5-inch-long (nominal) hardwood dowel.Tension Springs: Four 1-1/4-inch x 1/4-inch x 20-inch oak strips (available in trim section of a lumber yard or home store).One 2-9/16-inch x 1-inch x 7/16-inch (nominal) pencil eraser.Ends: Two 2-inch x 4-inch x 9-1/2-inch (nominal) pine boards.Base: One 9-1/2-inch x 15-inch x 3/4-inch piece of plywood.Sides: Two 1-inch x 6-inch x 15-inch (nominal) pine boards.Throwing arm: One 1/2-inch-diameter, 13-1/2-inch-long hardwood dowel.Four small screw eyes (3/16-inch-diameter eye or larger).Six 1/4-inch-diameter, 2-inch- long wooden dowels.Axle center: One 3/4-inch-diameter, 10-1/2-inch-long hardwood dowel.Axle pieces: Six 3/4-inch-diameter, 8-inch-long hardwood dowels.
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