CNC router bits and carbide cutting tools with tutorials and technical guides

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PreciseBIT 2-flute, Micro-engraving, PCB Traces Isolation Bits (EM2E8) - (0.125" shank)

Engraving / Metal Cutting

Overview

PreciseBits 2-flute spiral V-tip mechanical etching and PCB trace isolation tools offer an optimum combination of high-resolution cutting and tip strength. The plunge style tip geometry insures burr-free material removal at all plunge depths and cutting widths.

Manufactured in the USA, every tool is:

  • 100% measured / optically inspected to insure that EVERY tool meets, or exceeds, our published specifications
  • available with depth rings precisely positioned to ±0.004 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)

This attention to detail and the use of top quality materials result in tools with dependable cutting characteristics and one of the longest tool lives in the market. 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.

Specifications

  • Geometry - 2-flute, "V" point
  • Tip diameter - 0.0050 in. ±0.0002 in.
  • Length - indicated ±0.010 in. (30° 1.50 in. ±0.010 in.)
  • Tip angle - nominal ± 0.5°
  • Max. depth of cut - DOC (penetration) varies by tip angle
    • 30° - 0.177 in. (4.5mm)
    • 40° - 0.070 in. (1.8mm)
    • 45° - 0.075 in. (1.9mm)
    • 60° - 0.054 in. (1.4mm)
    • 90° - 0.031 in. (0.8mm)
  • Max runout (TIR) - < 0.0005 in.
  • Shank dia. - 0.1250 in. (3.18 mm) +0.00, -0.0002 in.
  • Anticipated Life - 3,000 linear inches (fiberglass, CNC milling)
  • Material - solid submicrograin carbide
  • Ring Set - 0.800 in. ± 0.002 in. (optional)
  • Operating RPM - CNC certified operation 20k RPM to 100k RPM

Benefits

  • spiral geometry insures efficient debris removal
  • Cutting edge geometry virtually eliminates chatter at high feed rates
  • 60° & 90° tips optimized for engraving non-ferrous metals, hardwoods, phenolics, stabilized woods and composite minerals.
  • Proprietary ZrN coating extends bit life and improves cut quality

Applications

  • Print circuit trace isolation
  • Engraving plaques, awards, medallions, and labels
  • Custom jewelry fabrication and marking

Application Data

  • Tool Type:Engraving (or Flat-tip Engraving)
  • Diameter (D) = 0.1250 in. (30°), 0.0625 in. (45°, 60°, 90°)
    • 30° D = 0.125 in.
    • 45° D = 0.0625 in.
    • 60° D = 0.0625 in.
    • 90° D = 0.0625 in.
  • Side Angle (A, half or draft-angle)
    • 30V: A = 15°
    • 45V: A = 22.5°
    • 60V: A = 30°
    • 90V: A = 45°
  • Flat Diameter (F)
    • 30°: F = 0.005 in.
    • 45°: F = 0.005 in.
    • 60°: F = 0.005 in.
    • 90°: F = 0.005 in.
  • Stepdown = Depth per Pass, Pass Depth:
    • Plastic - 0.015 in. (0.38mm)
    • G-10 / FR-4 - 0.010 in. (0.25mm)
    • Aluminum - 0.005 in. (0.13mm)
    • Hardwood - 0.020 in. (0.51mm)
    • Softwood - 0.030 in. (0.76mm)
    • MDF - 0.020 in. (0.51mm)
  • Depth of Cut (DOC):
    • 30° - 0.177 in. (4.48mm)
    • 45° - 0.075 in. (1.92mm)
    • 60° - 0.054 in. (1.38mm)
    • 90° - 0.031 in. (0.8mm)
  • Stepover (for final cleanup pass) = 0.002 in. (0.13mm)
  • Stepover (for roughing, clearance pass) = 0.005 in. (0.25mm)
  • Spindle RPM (SPEED) = 5 KRPM to 60 KRPM
  • 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 = 5 IPM to 25 IPM (again depending on material being cut)

Tutorials

Compatibility


MADE IN USA
2-flute 60° V-tip micro engraving, carving and PCB trace isolation, mechanical milling micro tools
LPKF and T-Tech users must specify the make and model number of their CNC routers
to insure that the rings are properly positioned!
 

30° V-tip tools are NOT intended for metal engraving, or PCB trace isolation

Product Compare (0)
Tip Diameter MaxDiameter LOC Flutes Angle Coating Shank OAL Depth Rings Reviews Part Number Price
0.0050" (0.13mm) 0.0625" (1.59mm) 0.0790" (2.01mm) 2 40° 1/8" 1.42" (36.1mm) Available EM2E8-0625-40V

$13.42
0.0050" (0.13mm) 0.0625" (1.59mm) 0.0790" (2.01mm) 2 40° ZrN 1/8" 1.42" (36.1mm) Available EM2E8-0625-40VC

$16.60
0.0050" (0.13mm) 0.0625" (1.59mm) 0.0694" (1.76mm) 2 45° 1/8" 1.42" (36.1mm) Available EM2E8-0625-45V

$13.42
0.0050" (0.13mm) 0.0625" (1.59mm) 0.0694" (1.76mm) 2 45° ZrN 1/8" 1.42" (36.1mm) Available EM2E8-0625-45VC

$16.92
0.0050" (0.13mm) 0.0625" (1.59mm) 0.0498" (1.26mm) 2 60° 1/8" 1.42" (36.1mm) Available EM2E8-0625-60V

$11.50
0.0050" (0.13mm) 0.0625" (1.59mm) 0.0498" (1.26mm) 2 60° ZrN 1/8" 1.42" (36.1mm) Available EM2E8-0625-60VC

$14.99
0.0050" (0.13mm) 0.0625" (1.59mm) 0.0288" (0.73mm) 2 90° 1/8" 1.42" (36.1mm) Available EM2E8-0625-90V

$11.49
0.0050" (0.13mm) 0.0625" (1.59mm) 0.0288" (0.73mm) 2 90° ZrN 1/8" 1.42" (36.1mm) Available EM2E8-0625-90VC

$14.99
0.0050" (0.13mm) 0.0945" (2.40mm) 0.1670" (4.24mm) 2 30° 1/8" 1.50" (38.1mm) Available EM2E8-0945-30V

$10.73
0.0050" (0.13mm) 0.0945" (2.40mm) 0.1670" (4.24mm) 2 30° ZrN 1/8" 1.50" (38.1mm) Available EM2E8-0945-30VC

$14.23