Hello,
I am having a problem with my upper edges fnish. I am using a one flute upcut spiral end mill (i know, that upcut is bad for upper edges finish). The problem ussually increases as the end mill getting more blunt through the time. But the main issue is, that i have a a big difference between horizontal and vertical cuts finish. Ussually I am roating square shapes, if the mill goes in vertical movement (isolated Y axis movement) the edges are perfect, but if it goes horizontal the edges are bad (fluffy) (isolated X axis movement). I am roating birch plywood most of the time, using convetional milling for countours and climb for slot cutting. Can anyone suggest what could be the problem here? I was wondering maybe the spindle is not perfectly square in one axial direction, which is possible, because i used not perfectly flat spacer for new spindle couple of weeks ago in terms of 0.2 mm cca.
Please see attached picture for clarification.
Thanks anyone for any suggestions.