First of all the lathe must be level.
The following is Dependant in the lathe capacity but you get the idea.
Use a 2" Diameter bar in the chuck and take 1 cut to clean the length of the material, then a very light cut 6" in length. Use a mic on either end. The tolerance on a Harrison lathe is 0.02mm over 6". If it needs aligning place a clock on at the end of the bar.there should be 2 bolts on the front and 2 at the back of the head stock. If its not to far out you may get away with just loosening the back 2 bolts. There should be an adjusting fixture for moving the head round. When u tighten the bolts back up, the head stock will move a bit. Machine bar and remeasure to test. Repeat until its right. |