An operator in Wichita bet me $50 that bumping my feed 15% would kill my insert, he was dead wrong
I ran that same CNMG insert for two full shifts after he left and it still had life left, but the finish got rough enough that QC flagged 6 parts on Friday. What feeds and speeds are you all running on 4140 with a 0.0312 radius insert? I think I was leaving money on the table running it so slow.