define_material('BALTIC_BIRCH_PLYWOOD',
	stepover=3.175,
	depth_per_pass=1.016,
	feed_rate=1524,
	plunge_rate=304.8,
	rpm=18000
);

define_material('ALUMINUM',
	stepover=3.175,
	depth_per_pass=0.381,
	feed_rate=1219.2,
	plunge_rate=254.0,
	rpm=18000
);