Tapered Ball-Nose Carving tools (CM408) - 1/8 in. (0.1250 in.) Shank
Tapered ball-nose end-mills are the most commonly used cutters for deep CNC carving in wood, plastic and metal. Their tapered profiles make them much stronger than equivalent straight-wall tools while providing more flute volume for efficient swarf removal in deep, single-pass machining operations.
Of all the tapered ball-nose carving bits on the market, only PreciseBits cutters are:
- 100% measured / optically inspected to insure that EVERY tool meets, or exceeds, our published specifications
- available with depth rings precisely positioned to ±0.0015 in. (0.038mm), virtually eliminating the need for resetting Z-axis zero between tool changes (with bits of same overall length)
- made from premium grade submicrograin tungsten carbide (HRa 92, HRc 80)
Combining premium grade submicrograin tungsten-carbide, with guaranteed fidelity to industry leading specifications and our exclusive depth setting rings, produces tools uniquely designed for today's demanding CNC machining and CAD/CAM simulation environments. Combined with comprehensive customer support, our cutters have become the tools of choice for sign makers, model makers, artists and instrument builders around the world
- Geometry - 4 flute, tapered high-shear flutes, ball-nose tip, 1/8 in. (3.18 mm) shank
- Length - 1.75in. (44.45mm) ±0.010in.
- Tip diameter -
nominal ±0.0005 in. - Taper angle -
nominal ±0.10° - Runout (TIR) - max 0.0002 in.
- Max. depth of cut - nominal ±0.100 in.
- Depth ring position - 1.050 in. (26.67mm) ±0.0015 in (0.038mm)
- Anticipated Life - depends on material being cut
- Material - solid submicrograin carbide
- Operating RPM - CNC certified operation 1k RPM to 40k RPM
- Dimensional signage
- Precision 3D carving
- 3D contouring and profiling
- Cabinetry and furniture making
- 3D millwork
- Compatible with CarveWright and CompuCarve woodworking systems.
- Tool Type: Tapered Ball Nose
- Shank Diameter = 0.125"
- Half angle (side angle)
- 0.0625in. (1/16in.) dia. tip: 3.8°
- Tip radius
- 0.0625in. (1/16in.) dia. tip: radius = 0.0313in.
- Stepdown (pass depth, depth per pass)
- recommended - 1X tip dia.
- maximum - 2X tip dia.
- Stepover:
- finishing pass (stepover, cleanup pass) = 0.08 X tip diameter (8%)
- roughing pass (clearance stepover) = 0.40 X tip diameter (40%)
- Maximum Depth of Cut (DOC) = 0.500"
- Spindle RPM (SPEED) = 5 KRPM to 60 KRPM (optimum speed)
- Feedrate (IPM) = Depends on the material being cut. Do the Sweetspot Test before setting this parameter
(go to: http://www.precisebits.com/tutorials/calibrating_feeds_n_speeds.htm). - Plunge rate = depends on speed (RPM)
- High Density Urethane (HDU)
- Hardwood - walnut, redwood, maple, rosewood, ebony, epe ...
- Plastic - PVC, HDP, MDP, acrylic, polycarbonate ...
- Finding the best combination of feed and speed
- Save time cutting 3D bass relief carvings using Rest Machining

Tip Diameter | MaxDiameter | LOC | Flutes | Draft Angle | Shank | OAL | Depth Rings | Reviews | Part Number | Price | |
---|---|---|---|---|---|---|---|---|---|---|---|
0.0625" (1.59mm) | 0.1250" (3.18mm) | 0.500" | 4 | 3.8° | 1/8" | 1.75" (44.5mm) | 1.050" Only | CM408-0625-050B |
$15.95 |