I’m sure this has been asked as thousand times before, yet somehow I cannot find any relevant post, I am probably not using the right keywords. While cutting circles (coasters…), I get this small groove at the point where the endmill starts/end each cutting pass:
It’s barely noticeable but it’s there on each piece. What is causing this ?
This is bamboo, 15.000RPM, feed 60, plunge 14, DOC 0.06