[stephen-churchman]

Hello,
I'm new to milling and cnc in general and I'm trying to improve this part if you look at the picture you'll see that my tool is leaving a mark on the metal, whats interesting about it is that its only on that side of the pocket, on the following pockets that have another side to them they are perfect no marks on them. If anyone has any insight as to what is going on and why its leaving a mark on the part that would be a big help thanks. I'm using a High-Speed Steel Square End Mill for Aluminum, Brass, and Bronze,TiCN Coated, 3 Flute, 3/8" Mill Diameter, 3/4" Length of Cut runing at 3000 RPM and about 24 Feed rate.
thanks in advance