rixstix
Member
Last weekend, a Bosch engineer friend was here and giving me pointers to use in my metal lathe journey.
We went to drill a hole and checked the center drill/workpiece center and the tailstock was 20/1000 high. After a hour of fiddle-farting, we just compensated using shims under the ass-end of the tailstock for the sake of progressing to the next tutorial step.
The next day, I'm remembering that the tailstock was dead on using either dead centers in head/tail stocks or dead center in head stock and dead center in tailstock jacobs chuck.
We found that one side of the #3 centerdrill was 20/1000 off; the other side just fine. Well that explains why some of my drilling was fine and other times just felt half bubble off.
Moral of the story... Don't assume the centers to be proper. Check before wasting time chasing your tail. Either toss or grind the bad side to prevent future foul ups or wasted time.
I did learn quite a bit that will work when my skillset lets me scale down the lessons to pen dimensions.
We went to drill a hole and checked the center drill/workpiece center and the tailstock was 20/1000 high. After a hour of fiddle-farting, we just compensated using shims under the ass-end of the tailstock for the sake of progressing to the next tutorial step.
The next day, I'm remembering that the tailstock was dead on using either dead centers in head/tail stocks or dead center in head stock and dead center in tailstock jacobs chuck.
We found that one side of the #3 centerdrill was 20/1000 off; the other side just fine. Well that explains why some of my drilling was fine and other times just felt half bubble off.
Moral of the story... Don't assume the centers to be proper. Check before wasting time chasing your tail. Either toss or grind the bad side to prevent future foul ups or wasted time.
I did learn quite a bit that will work when my skillset lets me scale down the lessons to pen dimensions.
Last edited: