End Mill Upcut Spiral
SpeTool 1/4" Single Flute Upcut Spiral
SpeTool
$9.99
Overview
The SpeTool 1/4-inch single flute upcut is one of the most recommended bits in the hobby CNC community. The single flute design allows aggressive chip evacuation, making it forgiving for beginners. At under $10, it is the go-to bit for wood and plastic cutting on machines like the Shapeoko, X-Carve, and LongMill.
Best for
General purpose profiling, slotting, and pocketing in wood and plastics.
Specifications
Shank Diameter
1/4"
Cutting Diameter
1/4"
Flute Count
1
Material
Solid Carbide
Coating
Uncoated
Type
Upcut Spiral
Material Compatibility
Wood Plywood MDF Acrylic PVC Foam Soft plastics
Not rated for aluminum. Use a ZrN or DLC coated single-flute end mill for aluminum cutting.
Pros
- Best value 1/4" upcut on the market
- Extremely popular in CNC community
- Forgiving single flute geometry
- Great chip evacuation in deep slots
Cons
- Rougher finish than 2-flute equivalents
- Not suitable for metals
- Can cause fuzzy edges in soft pine
- Cutting length may be too short for thick stock