A ring for people with TDAH, ADD or ADHD and anti-stress print in place simulating the tread of a tire.

I have added 12 sizes by measuring the inner diameter of the ring so as not to have to resize in the laminator since resizing could cause the rotation to fail.

Nozzle 0.4
layer height 0.08
It is recommended to lightly grease the joint between the two rings so that it rotates better. The first time it is turned it offers a little resistance due to print residue but then it turns well.

A great help to focus the attention of people with TDAH, ADD or ADHD And similar supersúper. powers .

I hope this can help you