Tag: end mill size

Metric vs inch end mills size comparison for CNC machining

Metric vs Inch End Mills: How to Choose the Correct Size

September 17, 2026 By zhycnctool

Metric and inch end mills may look almost identical, but similar nominal sizes are not always interchangeable. Small diameter differences can affect part dimensions, toolholder compatibility and CNC programming. This guide explains common metric and inch end mill sizes, practical conversions and the key factors to check before selecting or replacing a cutter.

End mill size guide showing diameter cutting length and overall length

Tool Knowledge

End Mill Size Guide: Diameter, Cutting Length, OAL & Standard Sizes

August 28, 2026 By zhycnctool

End mill size selection involves more than choosing cutter diameter. This guide explains common end mill sizes, diameter, cutting length, neck length, reach and overall length, with practical guidance for metric and inch CNC tooling.