Proudly serving the Aerospace, Automotive, Defense, Medical, and Oil & Gas Industries


Primary Cutter, LLC is the proud manufacturer of the SUPERMILL “High-Performance” Carbide Endmill product line. With long-lasting sharpness and reliable precision cutting, Supermill endmills are often considered the best endmills in the marketplace today. Our high-performance endmills provide unmatched value and dependability, while outperforming and out producing our competitors.





Supermill's most advanced asymmetric design yet!

New Xtreme XPV Series carbide end mills for Titanium and other difficult materials.

New Xtreme XPVS Series carbide end mills for Steel, Steel Alloys, Stainless Steels and Hardened Steels.

Engineered with variable index, variable helix, and progressive rake angles. This new design has been tested and proven to dampen harmonics, eliminates vibration, and stops chatter.

Learn about our Xtreme XPV Series

Tomcat Line

Supermill's state of the art Tomcat 5 flute carbide end mill line increases productivity, precision, and reduces machining time.

Learn more about our Tomcat line

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