So I'm trying to level my new lathe, a 13x40.
I'm using a Starrett machinist level (.005/10").
(I know I'm supposed to be using a master precision level (.0005/10")).
With the level perpendicular to the bed (on both v-ways or on top of
compound slide) there is a 2 division difference when placed at the
headstock vs the tailstock. This lathe is very rigid. I've had
the back tailstock levelling foot off the ground for 2 days
now, and it won't come down at all to remove the 'twist'. The
only conclusion I can come to is that the bed was ground that way.
Is it being off that much going to cause me problems?
With the level parallel to the bed (left to right) it seems the center
of the bed has a small dip. I think this is due to the above situation.
And this one makes no sense to me. With the level on the compound slide
(measuring front to back tilt) moving the cross slide the full range
causes a 3 division change. The only thing I can think of is that
the dovetails are curved front to back, instead of straight, which
would cause an angle change. Is this even an issue?
So for a new expensive Taiwain lathe, would this be considered
normal? If this is the best I can expect, then it will have to do.
I mostly make small parts, so I don't think I'll have any issues
to start. But if I start making bigger parts, will I run into
issues or is this something an experienced machinist has to
deal with normally?
17 years ago