What's the difference between Morse Taper roughing and finishing reamers?

I have to make a #2 Morse Taper socket (a new tailstock ram for an
ancient foot powered lathe) for a friend.
How much material can I remove with a MT roughing reamer? Is it like
using taper pin reamers where you just drill stepped holes, then crank
the reamer in? Or do I still need a finishing reamer after it?
How much material can I remove with a finishing reamer? Is this
something that I'd just use to true up a bored hole?
Pete Stanaitis
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Reply to
spaco
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Roughing reamers typically will have nicked edges to break up chips, used for heavy stock removal. You still have to remove most of the waste by othe rmeans, though, boring bar, drills, etc. Finishing reamers are used for that last little bit and to provide a good finish. Best bet is to taper bore within a thou or two of finished size(assuming your taper is set correctly), then use the finishing reamer to provide an accurate taper and good finish. Since you're going to be using it for a tailstock, you're going to want an accurately located hole to start with, best way is to bore it, not drill it.
Stan
Reply to
stans4

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