What size (3mm shank) ball endmill should buy?

[BillTodd]

she's at a show up and down the UK every weekend

John, any idea where I could find these shows listed? (do they come to East Anglia? or is it too far 'abroad'? )

[John S]

Bill, no chance of a listing because she does all types of shows not just model engineering.
She does agricultural shows, motor bike shows, staem rallies, I think it depends on what's on where that takes her fancy.

I may have a way of getting in touch with her, if so I'll ask for her list of venues.

Only one I can guarantee is Bristol ME show in August.