Stepped Pulley for Record Power CL1 Lathe

This is a stepped pulley to go on my Record Power CL1 lathe. The original machined metal pulley has a 15.8mm drive shaft and I have upgraded the motor to one with a shorter, but fatter shaft at 25mm.

This is my first foray into modelling with Fusion 360 and I don't yet know whether this will print well or accurately as it is still on the printer.

I have put a through hole threaded for 5mm/bolt to act as a key but may change this following testing.