xiii Machining Fundamentals Color Code A consistent color code is used in the line illustrations throughout Machining Fundamentals to help you better visualize the machining operations and procedures. Specific colors are used to indicate different materials and equipment features. The following key shows what each color represents: Metals Alternate metal Machines/machine parts Tools Cutting edges Work-holding and tool-holding devices Fasteners Abrasives Fluids Miscellaneous Direction or force arrows, dimensional information Work Angle plate C-clamp Drill press table Regulating wheel Work rest blade Grinding wheel Feed Work Avoid Preferred