Simple replacement parts
3D model description
Replacement pads for the REP Fitness PR1000 J-Cups these are about twice as thick as standard, helps keep them from twisting, gives more life tot hem as well.
You can get these made for you over at my shop
3D printing settings
I would recommend printing in HIPS with a super large nozzle and almost solid. If you want to anneal scale the whole thing up a bit.