How do I do this?

[Wongster]

Hi guys,thank you for your suggestion. I don't think I'm ready to make a broach. Heat treating and hardening are skills that I've yet to learn. I may just drill thought and finish the 1mm odd thickness by a file.

The material in use has to be 304 SS as it will be submerged in a drinks dispenser. I've not have the chance to see the bushing in use but was told that it is inserted in a motor shaft with flats at the end. I don't have time to visit my dad's office though I would very much love to - there is a machine shop next door...

The making of the bushing will be ongoing though the quantity is unlikely to be big. For this model of the dispensing machines, he only need 3 for a start.

Regards,
Wong