1/4" 2-Flute Up Cut Spiral

ID: U08

Type: End Mill

Same size as U04 down to the thousandth: 1/4” cutting diameter, 1/4” shank, 1” cutting length, 2-1/2” overall. Freud’s own coating instead of Amana’s Spektra: Black I.C.E. plus TiCo Hi-Density carbide, rated for the same cool-cutting-edge and chip-evacuation job.

Specifications

Property Value
Cutting diameter 0.250”
Shank diameter 0.250”
Flutes 2
Cutting length 1.000”
Overall length 2.500”
Geometry Up cut spiral
Corner radius None — square end
Material Solid carbide
Coating Black I.C.E. + TiCo Hi-Density carbide
Max RPM 24,000

Feeds & Speeds

For the X-Carve Pro and its 1.5 kW spindle. Identical numbers to U04 — same diameter, same cutting length, same geometry class, so there’s no reason to compute a separate table.

Material RPM Feed Chipload Plunge Stepdown
Hard maple / oak 14,000 220 ipm 0.0079” 60 ipm 0.250”
Soft maple / walnut / cherry 14,000 240 ipm 0.0086” 60 ipm 0.250”
Plywood 16,000 280 ipm 0.0088” 70 ipm 0.250”
MDF / laminate 16,000 300 ipm 0.0094” 70 ipm 0.375”
Softwood / pine 16,000 300 ipm 0.0094” 70 ipm 0.375”
Acrylic / HDPE 12,000 200 ipm 0.0083” 40 ipm 0.125”

Notes

Tears the top face on plywood and veneer, same upcut tradeoff as U01/U04. Reach for D01 or D02 instead whenever the top face shows.

Plunges fine — nothing in Freud’s own spec calls this out as plunge-ground the way Amana marks its “spiral plunge” line, but it’s a standard upcut with the same chip-evacuation behavior as U01/U04, so the same practice applies.

Black I.C.E. does its real work in MDF and laminate, same logic as Spektra on U04 — the coating buys life against abrasive sheet goods more than it does in solid hardwood.

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