Machining a disk that wont explode on it's 1st run ;)

[Dan-27]

I went with the thin ball bearings Gary found. I'll be using 2 aside, at a push I could fit 3 a side but we'll see how we get on with 2.

I turned that timing belt pulley to take a 25mm wide belt, but I might settle for 16mm. Would people advise against using the smallest 10 tooth T5 pulley for the motor? From what I can tell the drums are using somewhere around an 18 tooth on the motor, is this just to keep the material on the drum?

Hopefully the CNC work will be done by the end of the week, then I can start sweet talking metal hardening companies!