According to Wes :
For something like a taper for a R-8 or MT 4 1/2 or 5C or MT 3 what kind of
tolerance in inch per foot is considered reasonable?

Well ... considering how Morse tapers are supposed to work, I
would consider them the most critical -- perhaps a half thousandth in
the total working length of the taper.

I would consider the R-8 and the 5C to be a lot less critical --
since the taper of the collet itself will change as it closes, and it is
held in place by a drawbar. (The same applies to a Morse taper *collet*
instead of a solid shank tool with a Morse taper which depends on the
grip of the shank in the socket for holding properly.

Enjoy,
DoN.

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