I'm probably doing something stupid but I needs some help please.
35 year old Myford MG12 in seemingly good condition but I seem incapable of setting it to grind true. Here's what I'm doing: DTI from wheelhead to table front edge. Set table angle to give near zero change over table length, result duplicated on rear edge and top surface. (I think that excludes bent table and all slideways are clean and in good contact over entire length) Insert standard in collet. Concentricity checked. Workhead angle adjusted to give very close to zero change over 4 1/2" (Also true over wide range of speeds and no apparent lift in workhead bearings) Add tailstock, adjust until standard runs true over entire length. Result good finish but 0.009" out over 9" !!! (tailstock end is the smaller) Suggestions welcome before I go bald :-)- posted
18 years ago