Morse taper spec.

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Footnote 47, on p57, here [?] :

https://books.google.co.uk/books?id=F8jtCwAAQBAJ&pg=PA57&lpg=PA57&dq=morse+taper,+metrology&source=bl&ots=BqKPWUOhBN&sig=BYWM2lRezho2_e4A3oCWjKgnD9U&hl=en&sa=X&ved=2ahUKEwit5fDvxqPbAhWEAcAKHTuuARMQ6AEwAnoECAIQAQ#v=onepage&q=morse%20taper%2C%20metrology&f=false

MichaelG.

**LINK**

Disproven easily, I'm afraid - try fitting MT tapers in the wrong socket. Either they won't fit in or they will rattle like a stick in a bucket - the size differences are too large.

And if they did fit, would they be more likely to stick then the matching taper?

The B-series chuck tapers are interesting.

Neil

Pete - Jarno tapers weren't published until 25-odd years after Morse tapers, and we know that engineering moved on a lot in that time. Besides, who can say what bees designers have in their bonnets? I know I have made allowances in designs for things which turned out not to be a problem, and I'm sure a lot of others on this forum have done exactly the same.

Michael - Interesting footnote, but it doesn't cover the reasons for the difference

Neil - It looks as though your comment proves the point, as in neither case does the wrong Morse taper cause problems by jamming...

George

That's true if you decide to have a taper-making session, but in my experience I either have to make one for the tailstock (MT2) or headstock (MT4, shortened). Anyway, it's just a different set of parameters for the taper turning wizard!