DON’T |
“hit the shoulder” |
DON’T |
start tool on the work too hard. |
DON’T |
use poor cutting oil. |
DON’T |
use diehead with weak chaser springs, or clogged with chips -
keep the tools clean and the chasers sharp. |
DON’T |
let threading spindle and work spindle get out of alignment. Threading machinery that is kept in alignment means more and better threads from the chasers. |
AND IN GENERAL: |
DON’T |
run chasers too long between grinds. Grinding more often increases chaser life and results in better threads. |
DON’T |
use chasers with different throat angles in the same set. |
DON’T |
use chasers with shorter throat angles than necessary. |
DON’T |
burn the chasers. Take light fast cuts, using correct grinding wheel. |