Shiny gear lever top thingy

So, the story starts with a PM.... Ade, "What's the biggest ball you can turn on your equipment? Could you turn something about the size of a gear knob, for example?"
And it finishes like this....
One bucket o bits. Ade had already made an arbour and drilled/threaded a 31/2" lump of ali bar.

The threaded end was pre-sized and then it was screwed onto the arbour.

The radius cuts were started....

Ade's action shot....

Mid way...

A little curve added to the neck.

Ade's action shot..

Finished convex cut.

The little flare turned off and a little bit of blending with some emery. Another Ade's action shot


Finished!

And then a pic of it in it's new home....

Well, that's that one. Been in the 'puter for a few weeks now. Been back at work. No spare time or ridiculous late nights any more
For ref, ball size ~ 50mm.
Ralph (and Ade)