Sherline mini mill CNC rotary table
It's a bit more jaggedy than I was hoping. Part of this could be the "grain" of the aluminum. There is a very obvious banding, produced by the stretching of larger stock into the 1/8"x2" extrusion. More of it may be due to climb vs. normal milling. Edges interior to the end mill were normal milled, while edges exterior to it were climb milled with the direction the rotary table was spinning in relation to the end mill. Most edges of the wheel were thus normal milled. Still more might be due to spindle speed. I did initial cuts with lower speed, and then the rest on a much higher setting, perhaps around 1800RPM.
Sherline mini mill CNC rotary table
It's a bit more jaggedy than I was hoping. Part of this could be the "grain" of the aluminum. There is a very obvious banding, produced by the stretching of larger stock into the 1/8"x2" extrusion. More of it may be due to climb vs. normal milling. Edges interior to the end mill were normal milled, while edges exterior to it were climb milled with the direction the rotary table was spinning in relation to the end mill. Most edges of the wheel were thus normal milled. Still more might be due to spindle speed. I did initial cuts with lower speed, and then the rest on a much higher setting, perhaps around 1800RPM.