Hi I tried a relief cut on fusion 360 then saved it to the address card and ran it I think this line problem is my step over was set to 2 mm and my bit is a 1/8 ballnose thats 2mm wide at the tip Can some one verify its the step over that cause the lines. Because other that that it came out pretty well
Ball endmills need a fractional stepover. Like 50% or something close to that.