Marty slip-resistant shoe

Marty is a robot that can be found on the website https://robotical.io/
When I walked it, it moved with difficulty on surfaces too smooth.

I drew him anti-slip shoes that I printed with TPU. The result is inetessant and it is now moving much better.

Do not print these shoes with ABS or PLA, because the shoe will be as slippery as the original foot, thus making the shoe useless. In addition, the size of the shoe is designed according to the elastic nature of the printing equipment so that