to screw up one's face
131Keiji Mutoh — in 2008 Ring name(s) Keiji Mutoh[1] The Great Muta[1] …
132Speeds and feeds — A line drawing showing some basic concepts of speeds and feeds in the context of lathe work. The angular velocity of the workpiece (rev/min) is called the spindle speed by machinists. Its tangential linear equivalent at the tool cutter interface… …
