06-30-2013, 04:50 PM
I decided to see what the run out on the new lathe is using the Rollie's Dad's method.
http://www.neme-s.org/Rollie's_Dad's_Method.pdf
I got the new Lathe setup and leveled in. I've got a piece of .750 Drill rod that's pretty straight and is a very consistent .750 throughout.
I mounted it in the 3 Jaw and used it to test with. At the chuck, about .250" from the jaws the total difference in a full revolution was .001". So the near end average is .0005. Then at the other end ( almost exactly 10") the total amount was .002" so the far end average is .001" The difference between near end average and far end average is
.001 - .0005 = .0005.
So If I understand this correctly the runout is .0005" in 10", correct?
Thats seems pretty good to me but I don't really know. Should I try and correct that out or just leave it alone?
http://www.neme-s.org/Rollie's_Dad's_Method.pdf
I got the new Lathe setup and leveled in. I've got a piece of .750 Drill rod that's pretty straight and is a very consistent .750 throughout.
I mounted it in the 3 Jaw and used it to test with. At the chuck, about .250" from the jaws the total difference in a full revolution was .001". So the near end average is .0005. Then at the other end ( almost exactly 10") the total amount was .002" so the far end average is .001" The difference between near end average and far end average is
.001 - .0005 = .0005.
So If I understand this correctly the runout is .0005" in 10", correct?
Thats seems pretty good to me but I don't really know. Should I try and correct that out or just leave it alone?
If it's crazy but it works, it's not crazy.