3/4″ Ball Nose Rounding Bit 3/8″ Radius Cut, Cutting Board Juice Groove 1/4″ Shank for CNC Routers, Super-Shear (Big Stiffy Series)

$38.42

This Big Stiffy series 3/8″ radius ball nose bit (3/4″ inch diameter) for CNC routers is your all-purpose accent bit. And it is excellent for juice grooves on larger cutting boards. When it comes to profile work on keepsake boxes, this offers the best of both worlds…speed with a good stepover rate. And, of course, it is good for accent work when carving signs on your CNC router. Cuts fast and clean.

Your biggest advantage is the 1/2″ flat sidewall gives you the ability to run deeper cuts without leaving ‘witness’ lines on the project.

  • Shank: 1/4″ / Length: 2″ / Flutes: 2 / Flute length: 0.75″ / Cut Dia. 0.75″
  • Cut radius 3/8″ / Carbide tipped

In stock

Description

This Big Stiffy series 3/8″ radius ball nose bit (3/4″ inch diameter) for CNC routers is your all-purpose accent bit. And it is excellent for juice grooves on larger cutting boards. When it comes to profile work on keepsake boxes, this offers the best of both worlds…speed with a good stepover rate. And, of course, it is good for accent work when carving signs on your CNC router. Cuts fast and clean.

Your biggest advantage is the 1/2″ flat sidewall gives you the ability to run deeper cuts without leaving ‘witness’ lines on the project.

With a 1/4″ shank, it is suited well to remove large amounts of material in a single pass. The ‘super-shear’ blade design is designed to leave exceptionally clean cuts at higher feed rates.

Why is it called the Big┬áStiffy? 2 reasons. The first is, that this bit has extra mass, which absorbs vibration you’ll find in other large CNC bits. The second reason is, that the overall bit length is shorter than the standard bit. 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.

Specs

  • Shank: 1/4″ (6.35mm)
  • Radius: 0.375″ (9.5mm)
  • Cut diameter: 0.75″ (19mm)
  • Length: 2.0″ (50mm)
  • Flutes: 2
  • Flute length: 0.75″ (19mm)
  • Material: 100% tungsten-carbide tipped

Settings

  • Feed: 60 inches per minute (25mm/sec)
  • Speed (rpm): 14000
  • Max pass depth: 0.25″ / 6mm
  • Stepover: 20%
  • For CNC routers, see this speeds & feeds table

FREE Feeds & Speeds table PDF. Download by clicking here

 

Additional information

Weight .5 oz
Dimensions 9 × 7 × .5 in

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