13 years ago
I am trying to clean up the outside of a steel ring: 5.5" OD, 3.25" ID,
I clamp it in the 4-jaw chuck (inside the hole) and am trying to center it
using an indicator. However, the outside edge of the ring is so pitted and
irregular that the indicator jumps about to the point where the readings are
hard to interpret let alone use to center the work-piece.
Now I do not need great accuracy: The inner hole and the outer edge should
be concentric as far as possible but I am not quibbling of a 0.001" or two.
Yet this way it is hard to get it confidently within 0.010"!
Clearly the obvious answer to this is "Get a 3-jaw chuck" and I have one
already, 4" with two sets of jaws, the only problem is getting the adapter
to 1"-8 spindle and turning it down to size. But this may have to happen (in
fact if this thing merits further expense it will happen).
However, given what I got now, I wonder how others would approach this