NMTB Tool Holders Explained NMTB is one of the older steep-taper tool holder standards you will still find on manual mills, knee mills, and older NC machines. The name comes from the National Machine Tool Builders' Association, the industry standards group that defined the interface. That association no longer exists under that name, and its [...]

How Shrink Fit Tooling Works Shrink fit tooling is a common choice for high-speed machining, where runout and balance decide part quality and tool life. A shrink fit holder grips a cutting tool through a thermal interference fit. There are no collets, no nuts, and no moving clamp parts. Some machinists argue that a precision [...]