Tooling & Workholding

Milling Tools

Milling is the work of producing a flat or precision-contoured surface on a machined workpiece by using a rotating tool, and generally by taking multiple parallel passes with that tool. The work can be done on a machining center or milling machine, and can also be done on a lathe, turning center or turn-mill machine that happens to have rotary tool (or “live tool”) capabilities. The tools for milling include both solid tools and inserted tools—the latter consisting of a tool body that uses replaceable cutting inserts. Carbide is the most likely material for milling tools, though high speed steel is another choice, as are ceramic, cermet and diamond tools in certain more demanding milling applications. A common milling tool variety is the “end mill,” which generally describes a relatively narrow cylindrical tool that can mill on both its tip and its side, and can reach into various constrained features and spaces. The end mill can be flat-bottomed for flat surfaces, or ball-nosed for milling up, down and along the contours of complex milled shapes such as die and mold surfaces. Another common milling tool variety is the “face mill,” a generally larger-diameter tool designed for efficiently milling a wide, flat surface in an economical number of passes.

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Featured Zone Content

Video: Hard Pocket Milling


Relieved end mills and pre-machining of corners are two important considerations for accurate pocket machining in hard steel.



Briney Tooling End Mill Holders Produce Reduced Runout Capability

By: Lori Beckman (editor)
Briney Tooling Systems’ Tru Position end mill holders with reduced TIR of 0.0002 use a custom engineered internal eccentric grinding technique that produces the reduced runout capability.

rubber gaskets to ship

The Cutter Affects Capacity

By: Peter Zelinski
New machine tools allowed CTG to cut cycle time by 75 percent, but that wasn’t enough. Finding the right tool and process cut that cycle time further, giving the oil-industry manufacturer the capacity needed to support an important new product.

Milling App Aids Cutting Parameter Calculation

By: Edited by Jedd Cole
Helical Solutions offers the Helical Milling Advisor, a milling calculator designed to help users optimize use of the company’s end mills.

SwiftCarb Seven-Flute End Mill Allows Helical Ramp of up to 8 Degrees

By: Lori Beckman (editor)
Up to 40 percent faster than a standard five-flute end mill, the seven-flute XT7 RampMill's end geometry allows helical ramp engagement of up to 8 degrees in steel and exotic metals, the company says.

Midwest Cutting Tool's end mills

Extended End Mills for Deep Cavity Milling

By: Edited by Jedd Cole
Midwest Cutting Tool’s extended-reach carbide end mills provide high performance for deep-cavity milling.


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