End Mill Upcut Spiral
SpeTool 3mm Single Flute Upcut Spiral
SpeTool
$7.99
Overview
The 3mm single flute upcut is popular on entry-level CNC machines like the 3018 series. The smaller diameter is well-suited for the lower spindle power of these machines while still being useful for signs, small projects, and PCB work. A staple in the toolbox of budget CNC owners.
Best for
Small-diameter cutting on hobby machines, especially 3018-class CNC routers.
Specifications
Shank Diameter
1/8"
Cutting Diameter
3mm
Flute Count
1
Material
Solid Carbide
Coating
Uncoated
Type
Upcut Spiral
Material Compatibility
Wood Plywood MDF Acrylic Foam
Not rated for aluminum. Use a ZrN or DLC coated single-flute end mill for aluminum cutting.
Pros
- Perfect for low-power machines
- Well-suited for 3018-class CNCs
- Affordable entry point
- Good for small projects
Cons
- Very small - limited material removal
- Fragile in harder materials
- Short cutting length
- Not for large projects