Graffian,

God loves a tryer!

What is the spindle for?
Can you post a back-of -a-fag-packet sketch of it?
How dimensionally accurate does it have to be & what sort of finish do you need?
What sort of tool were you using?
What depth of cut?
What feed rate?
What spindle RPM?
Does it really have to be made of EN24?

Hopefully, if armed with the above info someone will be able to help

Reg