A boring machine is a device used to produce or enlarge (existing) holes in a workpiece. Boring machines have a cutting tip that can be made of steel, cemented carbide, and small grinding wheels (possibly made of minerals like diamonds). Single point tools are controlled by adjusting the boring head, moving circularly to create/enlarge holes and sweep debris from bored areas of the workpiece. Grinding wheel cutters have planetary/orbital motions, rotating rapidly around its axis. The hole diameter is controlled by adjusting the distance between the wheel axis and spindle axis. Spindles and a spindle axis are axes that rotate either vertically or horizontally on a boring machine. Vertical boring mills are used to rotate a workpiece around a vertical axis, while the boring bar and boring head moves in a linear motion. Horizontal boring mills are used to rotate the boring bar around a horizontal axis to bore holes in a workpiece while it’s held stationary on a table.