Jon Elson wrote:

Hello,

Does anyone know if there is a standard internal taper used with
the D1-6 spindle mount? I have a Sheldon R-15 lathe, and haven't
been able to figure out what the internal taper is, so that I can get
a dead center.

Thanks for the replies. It is apparently a MT # 6, at least that's what
they
used on a slightly earlier model than mine with the same spindle mount.

Jon