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The OSG 20642516 is a compression spiral router bit designed for precision cutting in composite materials. Built from solid carbide with a diamond finish coating, this bit delivers extended tool life and clean edge quality in demanding routing applications. The compression-style geometry combines upcut and downcut flute action to shear material from both faces simultaneously, reducing delamination and fraying on composite panel surfaces. At 0.25 inches in cutting diameter with a 45-degree helix angle and right-hand cutting direction, this bit is suited for CNC routing operations where surface finish and dimensional accuracy are priorities. Licensed trades and skilled machinists handling composite fabrication rely on this tool type for consistent, repeatable results.
This bit is intended for routing composite materials including laminates and engineered panels. The 0.75-inch length of cut suits through-cuts and profiling passes on typical composite sheet stock. The 0.25-inch shank diameter fits standard collets on CNC routers and conventional handheld router platforms. It is most commonly found in cabinetry shops, sign fabrication environments, and industrial composite panel operations where surface integrity on both the top and bottom face of the workpiece is required.
Designed for use in composite material applications. Fits routers and CNC spindles equipped with a 0.25-inch collet. Intended for material applications specified as composite per manufacturer data.
Installation should be performed by a qualified machinist or CNC operator. Ensure the router or spindle is fully powered down and isolated before inserting or removing the bit. Seat the shank fully into the collet to the recommended insertion depth and torque the collet nut according to the router manufacturer specifications. Inspect the bit for chips or coating damage before each use and do not operate at speeds exceeding the router or bit manufacturer rating.
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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