The dummy pin is one part of a three-part tool system. In addition to the crank and pin, you need a short section of a 1" dowel with a 3/8" hole drilled through the center (along the endgrain). Next to the hole, drill a smaller hole and screw in a brass oval head screw not quite flush. The dummy pin goes in the hole; the string rides against the screw snuggly between the top of the dowel and the underside of the screw head. This system makes perfect coils quickly. Using a full length dummy pin is possible with agraffes if you turn the assembly sideways, but I think a shorter dummy pin and dowel assembly would be an improvement. Carl
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