Category Archives: Router Bit Guides

Guides about woodworking router bits, CNC router bits, tool selection, maintenance and workshop use.

Router Bit Shank Size Guide: 1/4 vs 1/2 Inch, 6mm, 8mm and 12mm

Router bit shank size must match the collet in your router, router table or CNC spindle. Common sizes include 1/4 inch, 1/2 inch, 6 mm, 8 mm and 12 mm. These sizes are not interchangeable simply because they look close. The correct choice starts with machine compatibility, then considers cutter size, rigidity and the type […]

CNC Router Bit Flute Types: Upcut vs Downcut vs Compression

CNC router bit flute direction affects chip evacuation, edge finish and hold-down behavior. The most common choices for wood, MDF and plywood are upcut, downcut and compression spiral cutters. The right option depends on the material, cut type, workholding and which face of the panel needs the cleanest edge. Quick answer Use an upcut spiral […]