Double Cut Power

Carbo-Mills™ combine the hardness of tungsten carbide with an aggressive double-cut flute pattern for maximum material removal.

The double cut (also called cross-cut or diamond cut) pattern features two sets of flutes ground at opposing angles. This creates a series of diamond-shaped cutting teeth that break chips into small pieces, reducing loading and enabling faster cutting with a smoother finish than single-cut burs.

2X
Cutting Edges
Rc 90+
Hardness
Fine
Surface Finish

Double Cut Advantages

Faster Cutting

Cross-cut pattern removes material faster than single-cut while producing smaller chips that clear easily.

Smoother Finish

Multiple cutting edges produce a finer surface finish with less secondary finishing required.

Reduced Heat

Smaller chips dissipate heat better, keeping the workpiece and tool cooler during extended use.

Less Chatter

Diamond tooth pattern breaks up harmonics that cause chatter in single-cut tools.

Recommended Applications

  • Die & Mold Work: Cavity finishing, parting line removal, EDM electrode preparation
  • Weld Finishing: Grinding weld beads, preparing surfaces for re-welding
  • Deburring: Removing heavy burrs from machined steel parts
  • Porting: Engine head and intake manifold porting and polishing
  • General Metalworking: Shaping, contouring, and finishing ferrous metals
Carbo-Mills double cut carbide rotary burs
Specifications
  • Material: Tungsten Carbide
  • Cut Pattern: Double Cut (DC)
  • Shank: 1/4" standard
  • Shapes: All standard shapes
  • Hardness: Rockwell 90+
Regrind Service

Carbide tools can be resharpened multiple times. Save up to 70% on tool costs.

Learn More

Carbo-Mills™ Selection Guide

Carbo-Mill Shape Variations

Available in all standard Midget Mill shapes. Double cut carbide for maximum performance.

Popular Carbo-Mills™ Double Cut - Shape A (Cylindrical)

All Carbo-Mills are tungsten carbide with 1/4" shank. Available in multiple shank sizes - contact us for 3/32", 1/8", and 3/16" shank options.

Head Dia. Flute Length Tool Name EDP Number
1/8"1/2"8A4-W22380
1/8"5/8"8AI4L-W22381
1/8"3/4"8A5-W22382
1/8"1"8A6-W22383
1/8"1-1/4"8A-W22384
1/8"1-1/2"8AL-W22385
1/4"1/2"I0A8-W22480
1/4"5/8"I0LA8-W22481
1/4"3/4"12A8-W22482
1/4"7/8"12LA8-W22483
1/4"1"12XA8-W22484
5/16"3/4"14A8-W22485
3/8"3/4"16A8-W22486
1/2"1"20A8-W22487
3/4"1"24A8-W22490
7/8"1"28A8-W22492
1"1"32A8-W22494

Shape B (Ball)

Full radius ball shape. Radius equals one-half of head diameter.

Head Dia. Flute Length Tool Name EDP Number
1/8"3/32"8B4-W22392
1/8"5/32"8B6-W22393
1/8"3/16"8B-W22394
1/4"3/8"10B8-W22512
1/4"1/2"12B8-W22513
5/16"3/4"14B8-W22514
3/8"3/4"16B8-W22515
1/2"1"20B8-W22516
3/4"1"24B8-W22517
1"1"32B8-W22519

Shape C (Cylindrical Radius End)

Cylindrical shape with full radius end. Radius on end is one-half of tool diameter.

Head Dia. Flute Length Tool Name EDP Number
1/8"1/2"8C4-W22395
1/8"5/8"8CI4L-W22396
1/8"5/8"8C5-W22413
1/8"3/4"8C6-W22397
1/8"1"8C-W22414
1/8"1-1/2"8LC-W22398
1/4"1/2"10C8-W22521
1/4"5/8"10LC8-W22522
1/4"3/4"12C8-W22523
1/4"7/8"12MC8-W22524
1/4"1"12LC8-W22525
5/16"3/4"14C8-W22526
3/8"3/4"16C8-W22527
1/2"1"20C8-W22528
3/4"1/2"24GC8-W22529
3/4"3/4"24MC8-W22531
3/4"1"24C8-W22533
1"1"32C8-W22535

Shape T (Tree - Pointed Nose)

Tree shape with pointed nose for reaching into tight areas.

Head Dia. Flute Length Tool Name EDP Number
1/8"1/2"8T4-W22403
1/8"1/2"8T-W22404
1/4"5/8"10T8-W22557
3/8"5/8"12T8-W22558
3/8"3/4"14T8-W22559
7/16"1"16JT8-W22560
1/2"1"16T8-W22561
1/2"1-1/8"20T8-W22562
5/8"1"24T8-W22563
3/4"1"24PT8-W22565
1"1-3/8"32T8-W22567

Shape R (Tree - Rounded Nose)

Tree shape with rounded nose for smoother contour finishing.

Head Dia. Flute Length Tool Name EDP Number
1/4"1/2"12R8-W22546
5/16"3/4"14R8-W22547
5/16"3/4"16JR8-W22548
5/16"3/4"16R8-W22549
1/2"1"20R8-W22550
3/4"1"24R8-W22551
3/4"1"24NR8-W22553
3/4"1"24PR8-W22554
1"1"32R8-W22555

Shape N (Inverted Cone)

Inverted cone shape. Available with optional end cut (-EC) for plunge cutting capability.

Head Dia. Flute Length Tool Name EDP Number
1/4"1/8"8N-W22409
1/4"1/8"8N-W-EC22410
3/8"1/4"12N8-W22584
3/8"1/4"12N8-W-EC22588
1/2"3/8"16N8-W22585
1/2"3/8"16N8-W-EC22589
5/8"7/16"20N8-W22586
5/8"7/16"20N8-W-EC22590
3/4"1/2"24N8-W22587
3/4"1/2"24N8-W-EC22591
3/4"1/2"24JN8-W22545
3/4"1/2"24JN8-W-EC22592

Shape L (Taper - 7° Centerline Angle)

Tapered mills for die work and tapered cavities.

Head Dia. Flute Length Tool Name EDP Number
3/16"5/8"10L8-W22574
1/4"3/8"12L8-W22575
1/4"5/8"16L8-W22576
5/8"3/4"20SL8-W22577
5/8"1"20LL8-W22578
3/4"1-3/16"24L8-W22579
5/8"7/8"20L8-W22580
Ordering Information

Carbo-Mills™ are also available in single cut (standard) for finer finishing work. Contact us if you need a shape or size not shown here - custom configurations available.

Ecarno-Mills™

Ecarno-Mill standard spiral flute carbide tool

Ecarno-Mills™ are the standard single-cut (spiral flute) counterpart to the double-cut Carbo-Mills. Featuring a single set of helical flutes ground into solid tungsten carbide, these tools excel at precision finishing work where a smoother surface finish is required. Available in all standard Midget Mill shapes with 3/32", 1/8", and 3/16" shanks.

Ecarno-Mills™ — 3/32" Shank

Standard spiral flute carbide. All shapes available in 3/32" shank diameter.

Shape Head Dia. Flute Length Tool Name EDP Number
A1/16"1/4"SA-6121720
A3/32"3/8"SA-6321721
A-EC1/16"1/4"SB-6121723
A-EC3/32"3/8"SB-6321724
B1/16"3/64"SD-6121726
B3/32"5/64"SD-6321727
C1/16"1/4"SC-6121728
C3/32"3/8"SC-6321729
R3/32"5/16"SE-6121730
S3/32"5/16"SF-6121731
T3/32"5/16"SG-6121732
M3/32"1/4"SM-6221733
M3/32"3/16"SM-6121734
M3/32"1/4"SM-6321735
N3/32"1/8"SL-6221736
N1/16"1/8"SL-6121737
H3/32"5/16"SH-6121738
N3/32"1/8"SN-6121739
N-EC3/32"1/8"SN-6221740

Ecarno-Mills™ — 1/8" Shank

Standard spiral flute carbide. All shapes available in 1/8" shank diameter.

Shape Head Dia. Flute Length Tool Name EDP Number
A3/32"7/16"SA-4121770
A3/32"1/2"SA-4221771
A1/8"9/16"SA-4321772
A-EC3/32"7/16"SB-4121773
A-EC3/32"1/2"SB-4221774
A-EC1/8"9/16"SB-4321775
A-EC1/8"3/8"SB-4421776
B3/32"5/64"SD-4121777
B1/8"3/32"SD-4221778
C3/32"1/2"SC-4121779
C1/8"9/16"SC-4221780
Q1/8"1/32"SE-4121781
R1/8"1/2"SF-4221782
R1/8"1/4"SF-4121783

Ecarno-Mills™ — 3/16" Shank

Standard spiral flute carbide. All shapes available in 3/16" shank diameter.

Shape Head Dia. Flute Length Tool Name EDP Number
A3/16"1/4"SA-8221920
A3/16"3/8"SA-8121921
A-EC3/16"1/4"SB-8221922
A-EC3/16"3/8"SB-8121923
B3/16"3/32"SD-8221924
B3/16"5/32"SD-8121925
C3/16"1/4"SC-8221926
C3/16"3/8"SC-8121927
Q3/16"1/16"SE-8121928
R3/16"1/4"SF-8121929
T3/16"5/8"SG-8121930
FL3/16"1/4"SL-8121931
J3/16"7/16"SM-8121932
N3/16"3/16"SH-8121933
N3/16"3/16"SN-8121934
N-EC3/16"3/16"SN-8221935

Di-Car Mills™

Di-Car Mills herringbone and extra-fine double cut carbide

Di-Car Mills™ feature herringbone and extra-fine double cut patterns on solid tungsten carbide for ultra-smooth finish work. The herringbone cut pattern (alternating right and left hand flutes) produces an exceptionally fine finish, making these tools ideal for final finishing passes on precision parts. Available with 1/4" shank.

Tool Name Description Head Dia. Flute Length Shank EDP Number
A-44-H-WCyl. Flat End, Extra Fine Herringbone1/4"5/8"1/4"22150
A-48-D-WCyl. Flat End, Extra Fine Double Cut1/4"5/8"1/4"22151
B-44-H-WBall, Extra Fine Herringbone1/4"5/8"1/4"22152
C-44-D-WCyl. Ball Nose, Extra Fine Double Cut1/4"5/8"1/4"22153
C-48-H-WCyl. Ball Nose, Extra Fine Herringbone1/2"1"1/4"22154
H-44-H-WTapered Radius Nose, Extra Fine Herringbone1/2"1"3/8"22155
R-44-D-WTree Radius Nose, Extra Fine Double Cut1/4"1/2"1/4"22156
R-48-D-WTree Radius Nose, Extra Fine Double Cut1/2"1"1/4"22157

Tangent & Hole Deburring Cutters

Tangent deburring cutter - left hand spiral for curved surfaces

Tangent Mills™ are left hand spiral, right hand cutting Carbo-Mill variants (Shape N — inverted cone) especially designed to control tool wandering on curved surfaces. Ideal for finishing holes in tubing and deburring contoured workpieces. The left-hand spiral pulls chips away from the workpiece for cleaner cuts. Available with and without end cutting (-EC) capability.

Tangent deburring cutters use Shape N (inverted cone) geometry from the Carbo-Mills line. See the Shape N table above for the complete listing including EDPs 22409–22410 and 22584–22592.

Key applications:

Single Cut vs. Double Cut

Carbo-Mill double cut flute pattern detail

Single Cut

  • One set of parallel flutes
  • Produces longer chips
  • Best for precision finishing
  • Smoother surface on soft materials
  • Lower material removal rate

Best for: Finishing operations, aluminum, softer materials where chip clearance isn't critical

Double Cut (Carbo-Mills™)

  • Two sets of intersecting flutes
  • Produces small, broken chips
  • Best for aggressive stock removal
  • Excellent in steel and hard metals
  • Higher material removal rate

Best for: Heavy deburring, weld grinding, die work, steel and stainless steel

Ready for Aggressive Cutting Performance?

Contact us for pricing and availability on Carbo-Mills™ double cut carbide burs.

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