Cutting Tools

Choosing the right cutting tools

Choosing the right cutting tool starts with matching insert grade and coating to your workpiece material and cutting speed. For steel roughing, a PVD-coated negative-rake insert like the Kennametal CNMG series balances edge strength with heat resistance. For finishing passes, a sharper positive-rake insert such as the Widia VNMG improves surface finish at lower depths of cut. Solid carbide end mills and drills should be selected by flute count and helix angle: more flutes suit finishing and harder materials, while fewer flutes with higher helix angles clear chips faster in aluminum and softer alloys. If you're unsure which grade fits your application, our engineers can review your material, machine, and tolerance requirements before you order.