16-09-2019, 08:46 AM
Hi Tony
Dowells can ensure great precision. Not sure that it is all that critcal anyway. A thin shim added and subtracted does not weigh a lot.
I guess you were referring to lathe chucks which seem to usually have about .003 runout even when new.
Much of the art and intriguing challenge of lathework is accomodating such features when doing exact work.
But the comment does also apply to lathes with removable gap beds, now out of fashion.
Dowells can ensure great precision. Not sure that it is all that critcal anyway. A thin shim added and subtracted does not weigh a lot.
I guess you were referring to lathe chucks which seem to usually have about .003 runout even when new.
Much of the art and intriguing challenge of lathework is accomodating such features when doing exact work.
But the comment does also apply to lathes with removable gap beds, now out of fashion.