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Spiral Bit Router Bits

2-Flute Downcut — 1/4"

Generic
Overview
Generic 2-flute downcut spiral end mill, 1/4in shank. Downcut geometry pushes chips DOWN keeping the top surface clean. Essential for veneered plywood and melamine. Max RPM: 24,000.
Properties
Difficulty
beginner
Pros
  • 1/4 inch shank provides better rigidity than 1/8
  • Downcut action gives clean top surface
  • Better for harder materials
  • Less vibration than smaller bits
  • Good for plywood and hardwoods
Cons
  • Requires 1/4 inch collet
  • Heavier cuts need slower feed rates
  • Chip evacuation is downward — not ideal for deep cuts
  • More expensive than 1/8 inch equivalents
Best For
  • Veneered plywood (clean top face)
  • melamine
  • laminate sheet goods
  • finish pass on top face after upcut roughing
Avoid For
  • Deep pocketing without chip evacuation
  • through-cuts as sole pass on thick material
  • acrylic
Brands
WhitesideAmana ToolFreudBoschCMTOnsrud