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Upcut vs Downcut Spiral Router Bits (Chips & Finish)

This page provides standardized, specification-oriented reference information.

Specifications

Specification Value
Upcut Pulls chips up/out; can improve chip evacuation; may increase top-surface tear-out in some materials.
Downcut Pushes chips down; can improve top-surface finish; may pack chips in deep cuts without clearance.
Common Use Choose based on which surface finish matters most and the cut depth.

Availability

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Sources

  • Manufacturer documentation
  • General woodworking references

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