Quote Originally Posted by m_c View Post
BT/CAT/INT/Whatever in 30 or 40 would be my choice.
R8 is just a glorified collet system.

30 is a nice size for smaller machines, however 40 stuff is more common.
One of my pet hates with my Harrison mill is it's only an INT30, as finding suitable arbors can be a problem, and some of what I've got I had to import from over the pond as no UK supplier could supply them at a reasonable price.
lets try to steer this away from becoming another 'R8 is inferior' thread, there are plenty of them about!

I know a 40 taper spindle would be somewhat overkill but it could well be implemented and the abundance of tooling certainly backs its cause



what if i was to machine the outer profile of the spindle (between centers) and use a TP grinder on the bearing surfaces, then machine the interior taper etc once in situ
does this sound like a plan or a waste of time?