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3-flute Carbide Counter-board Channel Cutter (RC3D8) - (0.125" shank)


  • Geometry - 3 high-shear straight-flutes, stub length, 1/8 in. (3.18 mm) shank, fish tail point 
  • Length - 1.5 in. 0.010 in.
  • Diameter - nominal  +0.0000 in.,  -0.0010 in.
  • Shank dia. - 0.1250 in. (3.18 mm) +0.00, -0.0002 in.
  • Runout (TIR) - 0.0002 in.
  • Max. depth of cut - 0.125 in. 0.005 in. 
  • Anticipated Life - min. 10,000 linear inches (composite, Micarta)
  • Material - solid submicrograin carbide
  • Operating RPM - CNC certified operation 20k RPM to 100k RPM
  • Feeds / speeds - min. 175 - 200 in./min. @ 40 KRPM (Micarta)


  • Machining counter-board channels in matrix and composite materials.
  • Slotting FR-4 and other electronic substrates
  • Engraving in thin substrates


  • Shallow fish tail point insures smooth channel profile 
  • High flute volume supports high feed rates / chip loads
  • Cutting edge geometry virtually eliminates chatter at high feed rates
  • Straight flute geometry eliminates lifting and gouging of the substrate
Carbide 3-flute Zero Helix Counterboart Channel Cutters for Phenolics and Composites
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3-flute zero helix high-rake tip

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Updated 10/10/2016 11:16:36 AM