150 Degree V Bit, 1/4″ Shank for CNC Routers, Super-Shear [Big Stiffy Series]


The 150 degree v bit ‘Super Shear’ for CNC routers is the bit when speed and width of cut matters, as much as the carving quality. This 150 degree bit is part of the Big Stiffy series, a set of bits designed to virtually eliminate uneven carves due to chatter. See full description for more info.

  • Shank: 1/4″ / Length: 2″ / Flutes: 2 / Flute length: 0.135″ / Cut Dia. 2″
  • Cut angle 150 degree / 100% carbide

In stock


The Big Stiffy series 150-degree v-bit for CNC routers is the bit to use on those large area carves when you want your job done fast and clean. With a 1/4″ shank, it is the go-to v carving bit for home-based CNC’ers when it comes to larger projects. The ‘super-shear’ blade design is designed to leave exceptionally clean cuts at higher feeds rates. This is the v bit to use when your v-carved letters are wider than 1″.

Even better, it is for the CNC’er who wants to make a pizza peel! This 150 degree bit is the perfect shape for the scoop taper on the peel!

Why is it called the Big Stiffy? Overall, the bit length is a bit shorter than most. This little design modification keeps your bit stiffer during cuts, which gives you a 50% improvement in your surface finish. In other words, the potential for chatter is virtually eliminated.

This bit has a carbide blade brazed to a 4140 body.


  • Shank: 1/4″ (6.35mm)
  • Cut diameter: 2″ (50mm)
  • Cut angle: 150 degrees
  • Length: 2.0″ (52mm)
  • Flutes: 2
  • Flute length: 0.135″
  • Material: 100% tungsten-carbide tipped


  • Feed: 80 inches per minute (16mm/sec)
  • Plunge: 20 inches per minute
  • Speed (rpm): 10000-14000
  • Max pass depth: 0.130″ / 6mm
  • Stepover: 20%
  • For CNC routers, see this speeds & feeds table

FREE Feeds & Speeds table PDF. Download by clicking here


Additional information

Weight 2.9 oz
Dimensions 9 × 7 × .5 in


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