I'm new to milling and the SX3, but I've got my machine set up and it works fine w/ Mach3. I was testing out the wizard for circular pockets with a piece of aluminum, a .5" TiN end mill at 1500 RPM, .005" feed rate, and coolant. Everything was going fine, so I bumped the feed rate to .010". Things started OK, but then the machine started to shudder so I stopped and went back to a .005" feed rate, but the shuddering continued, so I quit. Attached is the photo of the lousy finish that resulted. The finish before I went to the .010" feed rate was good.
I assume I just learned that .010" is too fast under these conditions and I dulled my cutter, but I wanted to check here first for other interpretations. Thanks.
Involute