1/8" 2-Flute Down Cut Spiral

Bits & Bits’ own 1/8” downcut, straight-through 1/8” shank instead of D03/D04’s reduced 1/4” — and a full 1” cutting length to go with it, matching U05’s reach rather than D03/D04’s shallower 0.5”.

Specifications

Property	Value
Cutting diameter	0.125”
Shank diameter	0.125” (straight through)
Flutes	2
Cutting length	1.000”
Overall length	2.000”
Geometry	Down cut spiral
Corner radius	None — square end
Material	Solid carbide
Coating	AstraHP

Feeds & Speeds

For the X-Carve Pro and its 1.5 kW spindle. Same numbers as D03 — same diameter, same geometry class, same shaft-rigidity limits on stepdown.

Material	RPM	Feed	Chipload	Plunge	Stepdown
Hard maple / oak	14,000	110 ipm	0.0039”	15 ipm	0.0625”
Soft maple / walnut / cherry	14,000	120 ipm	0.0043”	15 ipm	0.0625”
Plywood / veneered sheet	16,000	140 ipm	0.0044”	15 ipm	0.0625”
MDF / laminate	16,000	150 ipm	0.0047”	18 ipm	0.0938”
Softwood / pine	16,000	150 ipm	0.0047”	18 ipm	0.0938”
Acrylic / HDPE	12,000	100 ipm	0.0042”	13 ipm	0.0313”

Notes

Maximum cut depth is 1.0” — double D03/D04’s 0.5”, matching U05’s reach. The package reads 1” length of cut; the earlier listing this note was drafted from said 3/4”, which was wrong.

Always ramp — never plunge, same rule as every downcut here. Straight-through 1/8” shank doesn’t change the chip-packing physics.

Straight shank, not reduced. Unlike D03/D04, there’s no step up to a fatter shank above the flutes — this one is 1/8” from collet to tip, so it’s the least rigid of the 1/8” downcuts over its exposed length even though the cutting geometry is identical. With a full 1” of that length unsupported below the collet, that flex matters more here than on the shorter 1/8” bits — light passes, don’t push stepdown past what’s in the table above.

Links

• Product page: Bits & Bits 820-DNC125
• Machine: X-Carve Pro
• CAM library: Fusion hub library, Human Crafted (T16)