Pinchball

Simple pinch grip exercise tool. Make a double overhand knot on a piece of 5mm reep cord and thread it through the pinchball to attach weight.

I've printed mine with matt PLA, 4 diameters, 20% grid infill, printed using Prusa i3 MK3S+.

I've added very mild fuzzy skin. It gave the pinchball quite nice surface for holding.