Mathematician Karl Reinhardt discovered this pentagonal tiling in 1918. Nearly 100 years later you can now 3D print it as a bracelet for some serious geek bling.This model 3D prints as a flat strip. Get a mug of very hot water and use it to heat and bend the bracelet to fit your wrist. It's easy!This bracelet is a lovechild of the Pentomizer (http://www.thingiverse.com/thing:1008750) and the Easy Thermoform Hex Bracelet (http://www.thingiverse.com/thing:1097615)