Summary

Wanted to use my standard weights without the need for gloves and also avoid slip when weights used vertically, these fat grips were designed for standard cast iron dumbbell sets common in Australia, the Sketchup file also includes bar dimensions for reference.

They work great (no more hand blisters), I have been using them daily for several years.
I have just printed a second set and thought they were good enough to share.

Printed in ABS with 3 perimeters and 60% infill, used liquid ABS (ABS scrap dissolved in Acetone) to glue together the 4 parts around the bar, should also be fine printed in PLA glued with superglue (not tested).