Tread for 8mm bearing found here: https://www.amazon.com/gp/product/B08H278R7K/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1

Print with Flexible TPU material

.16 mm Layer Height
1 mm Top/bottom thickness
1.2mm wall thickness

Used for making the DYI Rotary attachment for Snapmaker Laser Module with 8mm bearings instead of the more expensive 10mm ones

Use a small rubber band around the tread if more friction is needed
https://forum.snapmaker.com/t/diy-rotary-attachment/16252/28

Snapmaker 2.0 A350

No

No

200

40