Never done the check myself but just a thought. If you had a test bar in the lathe running perfectly true of sufficient length to check the full travel of the carrage then a DI in the toolpost set on top of the test bar should show the amount of wear in the bed as you move the carrage along the bed. Welcome others thoughts on this method. Mounting the DI on the tailstock is another and using the tailstock ways as a reference is another previosly mentioned. In another life we rescued and old badly worn bed on a large Niles by mounting a grinder on the tailstock and grinding the ways to match the tailstock ways. Worked too. Peter
Last edited by Oldbrock; 11-08-2010 at 12:08 PM.
The difficult done right away. the impossible takes a little time.