A small groove ground back of the cutting edge on the top of a cutting tool to keep the chips short.

The frame and two handles (bars) which hold the dies (chasers) used for cutting (chasing) external screw threads.

The RPM at which a machine is set. See cutting speed.

That part of a machine tool. such as a lathe or cylindrical grinder which supports the end of a workpiece with a center. It may be positioned at any point along the way of the bed, and may be offset f [..]

(sandstone, emery, corundum. diamonds) or artificial (silicon carbide, aluminum oxide) material used for making grinding wheels, sandpaper, abrasive cloth, and lapping compounds. abrasive wheels

Conforms to a standard or tolerance.  

A screw thread having a 29 degree included angle. Used largely for feed and adjusting screws on machine tools.  

An angle that is less than 90 degrees.  

A tool holding device for fitting together various types or sizes of cutting tools to make them interchangeable on different machines.  

That portion of a gear tooth that extends from the pitch circle to the outside diameter.  align - To adjust or set to a line or center.