I apologize if this has been discussed before - I couldn’t find anyone with a similar issue.
I am cutting corbels out of 4/4 white oak using a 1/4" end mill. To make a completely through cut, the machine will make 10 passes. However, after approximately 3 or 4 passes, upon establishing the new depth of cut at the beginning point, as soon as the bit contacts the workpiece, it “pops” back up ever-so-slightly so as to continue the path without contacting the piece. It continues to do this every single pass until the job is complete, leaving the piece only approximately 30% cut.
I have tried increasing the spindle speed to no avail. I have no clue what may be causing this issue and cannot afford to continue sacrificing one inch pieces of white oak.
Any suggestions? Thanks in advance.