Filtering the recently posted winding tools; I needed a working model for test on 2" straps. It's 3 separate parts, for easy modifications.
Sized for 1/2" drill power [7/16" hex].
Large radius on the flange face allows strap to wind without snagging.
Boss gives decent support to center pin 3/4" Ø, and pair of 10-32 set screws 90° apart.
Both pins taper so they won't bind on removal. Center is 1 3/4 long, other spaced 1 1/4" away and 1 7/8" long.
The idea is, winding is done on a platter to keep the coil flattened out. So far, that's just been the concrete floor.
All in all, the hand cranked type seem better; compact, not dependent for separate power, accept different sizes.