Summary

This is a magnet ring for the Reality Runner sesor. I designed it for the Sunny Health & Fitness manual treadmill (5.9" flywheel). The magnets i used are 10mm x 2mm neodymium. I've allowed a 0.4 difference in size of the union joints for an easy snap together. Glue to your flywheel, mount your sensor, and start playing :) enjoy!!
I printed it in PLA
3 wall loops
0.2mm layer hight
no supports
detect thin walls
inner/outter