I have been pocketing some 10mm diamater holes 2mm deep with 0.2mm depth per cut. I am running a Rambo 1.4 board from a Microsoft Surface 3 running repetier host with gcode generated from Estlcam.
Some of the holes look absolutely perfect but then some are 3/4 moon shaped. The strange thing is that if a repeat the code again, it is not always the same holes that generate the 3/4 moon shape. Some holes appear to be 3/4moon all the way though, some seem to hit this shape part way down the cut.
Any thoughts on what could be causing this? Maybe its dirty causing slipping?