Pro tip: I switched from a 3/8 to a 1/4 inch end mill for finishing passes on aluminum and the chatter marks vanished overnight.

My lead says it's a waste of time and tool life, but the finish is so much smoother. Anyone else have a strong opinion on this?

2 comments

2 Comments

Heard that smaller tools deflect less, is that it?

Yeah @victor_lane60, read that smaller diameter means less flex.