Lathe Drilling, Countersinking, and Reaming - 6: Reaming
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WARNING: Machine tools present a safety hazard. Improper operation can result in severe injury. These topics are for non-laboratory study only and are not to be used in conjunction with the operation of any tool or machine described herein. Never use a machine tool without the supervision of a qualified instructor.
It is not possible to use automatic feed when reaming using a tailstock. A perfect finish is dependent upon how steady the reamer is fed into the hole by the operator. A slow, steady feed with plenty of cutting oil (coolant) will produce a finely finished reamed hole. The machine should be set at a speed of about 80% of the drilling speed.

It should be noted that the reamer cuts with the front beveled edge, not the long flutes. The long flutes act to steady the reamer and keep it centered. It is best to chamfer the entrance to the hole before reaming (next page)

In this video a .250 diameter machine reamer is used to perfectly size this hole completely through

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label: lathe drilling, countersinging, reaming, tailstock alignment, indicating, center drilling, chamfering