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The HARVEY TOOL 920993-C4 is a solid carbide diamond pattern router bit designed for precision milling in composite materials. With a cutter diameter of 0.093 inches and a 7-flute end mill geometry, it produces clean, controlled cuts in demanding substrates. The amorphous diamond coating extends tool life and reduces heat buildup during high-cycle routing operations. An overall length of 1.5 inches and a 1/8-inch shank diameter make it compatible with standard collet systems used in CNC routers and high-speed spindles. This bit is intended for professional machinists, CNC operators, and composite fabricators working in production or custom-shop environments.
This router bit is suited for routing composite materials such as carbon fiber, fiberglass, and similar reinforced substrates where tool wear is a primary concern. The diamond pattern flute geometry and amorphous diamond finish are optimized for these abrasive materials, helping maintain edge sharpness over extended run times. It fits standard 1/8-inch collet setups commonly found in CNC routing equipment used in aerospace, marine, and industrial fabrication shops.
Designed for use in CNC routers and high-speed spindles equipped with 1/8-inch collets. Optimized for composite material applications including carbon fiber and fiberglass laminates.
Installation should be performed by a qualified CNC operator or machinist. Ensure the spindle is fully powered down and locked out before changing tooling. Seat the shank fully into the collet to the recommended depth and torque the collet nut per the spindle manufacturer guidelines. Always verify runout with a dial indicator before beginning a production run in composite materials, as even minor runout accelerates wear on fine-diameter carbide tooling.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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