I am making a twin motor scale boat, and I don't really want to have to buy two propshafts, as they are very expensive.

I want to try and make my own, but have a slight problem. I can get hold of 4mm axle, and aluminium tubing for the outside bit, and I have a die for making the thread. My problem is that I don't know how to get/make bushes for the front and back of the outer tube. How do you make these, or where in the UK can you buy them?

Thanks,

cowana