Moving my confusion right along:

I had thought that displacing the drive center in the same plane
radially from the lathe's center axis was 'off center turning' and
changing the drive axis to an angle from the lathe center was 'eccentric
turning'. Thinking about Bill and Leo's posts, I've had it wrong. In
my concept of 'offset' the turning cone's base is at the headstock and
its point is at the tailstock. In 'eccentric', it's the reverse, but
there's no essential difference. Right?
Funny how wrong ideas get fixed in the mind.

Leo, practically, how forgiving is your chuck re different blank lengths
while keeping the tail-points reasonably true? Can you cut all blanks
to the same 'focal' length and vary the waste for different pieces?
Sort of like the myth about Procrustus who made all his coffins the same
short length and cut off the deceased legs to fit.

For some this may be a bit tedious and it sure isn't earthshaking, but I
urge Leo, Bill, Randy and others to comment and in particular on the
terms; 'offset' and 'eccentric'. Our archives have enough errors
already.

Arch

Fortiter,


http://community.webtv.net/almcc/MacsMusings