Yawara Stick / Foot Massage Roller

The yawara stick is a Japanese self-defense weapon brought to US police departments in the 1930's and popularized by comic strip character Modesty Blaise in the 1960's. The more modern kubotan is a variant of the yawara stick. But because you are highly unlikely to ever have to beat someone up with the assistance of a yawara stick, it also make for an excellent rolling foot massager.

This is designed as two pieces that simply glue together with a little superglue. Printed in PLA with relatively thick walls (4 perimeters) and high infill (35%), it is quite sturdy. Print both pieces with a brim (inside and outside) for secure bed adhesion.