The file 'Polar Chest Strap / Heart Rate Sensor – Mount 3D Printer Model' is (stl) file type, size is 163.9KB.
My first real Thing, designed in TinkerCAD. Sorry if it's not perfect round, but this was all I can do.
This is a holder for my Polar H10 heart rate monitor. You can put the belt on top and the sensor itself inside the small shelf. It will also match other belt's, with a maximum width of 35mm (better less).
I stuck it to the cupboard with a Tesa power strip. Therefore, no wholes for drilling needed.
Polar_Strap_Holder_v0.2_final.stl | 584.8KB |