This is modeled after Stiles- Edgebander Rollers from my wood shop

they accept a 3mm steel rod that can be purchased from amazon:

[https://a.co/d/9WtWNa1](https://a.co/d/9WtWNa1)

these have held up to many hours of hard abuse from the men working in the shop. They are used for gliding wood boards into the machine for processing. I have included a photo where they go in the machine to get a better understanding of their purpose.

Thank you for checking this out and happy printing!

-Chad The Dad