Glasses holder for clothes

I've seen the so called "readerests" on Google and made some more usefull ones myself with SolidWorks2015.

They attach to each other and trough clothes with magnets. I used some I found on amazon with a diameter of 10mm and a thickness of 2mm. I pressed the magnets into the prints with the help of a vice.

The thread is a fibre from a paracord. Works just fine and is thick enough to prevent the joints of the glasses to geht caught in it.