PreciseBits Tapered Carving Tools (CM304 CM404)

Overview

A high quality 3 or 4-flute solid micro-grain carbide tapered cutting tool designed for 3D machine carving. The high-shear ball nose tip cuts smooth 3D contours with reduced stepping and minimal 'fuzz'. This bit also features a high flute volume for high feed rates and the high aspect ratio allows for single pass deep-reach cutting. A great choice for such applications as dimensional signage, precision 3D carving, 3D contouring, cabinetry and furniture making, 3D mill-work, etc. The 1/32" and 1/16" bit are also a drop in replacements for the CarveWright and CompuCarve carving bits.

These bits work well in a surprising range of materials such as:

• High Density Urethane (HDU)
• Hardwood - walnut, redwood, maple, rosewood, ebony, epe
• Plastic - PVC, HDP, MDP, acrylic, polycarbonate
• Metal - zinc, aluminum, copper, brass, bronze, silver, gold

The applications are nearly endless and include:

• Dimensional signage
• Precision 3D carving
• 3D contouring and profiling
  Cabinetry and furniture making
• 3D millwork
• Compatible with CarveWright and CompuCarve woodworking systems.

Bit Specifications

• Geometry - 3 & 4 flute, tapered high-shear grind, ball-nose tip, 1/4" (6.35 mm) shank
• Length - 2.5" (63.5mm) ±0.010"
• Tip diameter - nominal ±0.0005"
• Taper angle - nominal ±0.10°
• Runout (TIR) - max 0.0002"
• Max. depth of cut - nominal ±0.100"
• Anticipated Life - depends on material being cut
• Material - solid submicrograin carbide
• Operating RPM - CNC certified operation 1k RPM to 40k RPM

Bit Sizes

Application Data

• Tool Type: Tapered Ball Nose
• Shank Diameter = 0.250"
• Half angle (side angle)
  • 0.0313" (1/32in.) dia. tip: 6.2°
  • 0.0625" (1/16in.) dia. tip: 5.4°
  • 0.1250" (1/8in.) dia. tip: 3.6°
  • 0.2498" (1/4in.) dia. tip: 0.1°
• Tip radius = nominal ±0.001"
• Stepdown (pass depth, depth per pass)- 2 X tip diameter max
• Stepover:
  • roughing pass (stepover) = 0.25 X to 0.40 X tip diameter
  • finishing pass (clearance, cleanup pass) = 0.10 X tip diameter
• Depth of Cut (DOC) = 1.074"
• 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 = 10 IPM to 25 IPM (again depending on material being cut)