CNMG 85°, TNMG 93° or DNMG 95°? A practical guide to choosing the right nose angle for roughing, semi-finishing and finishing on the CNC lathe.

External (ER) or internal (IR)? ISO 60°, Whitworth 55° or trapezoid? How to pick the right thread turning insert size, pitch and geometry for your application.

Why U-drill replaces drill-then-bore for deep holes — and how to choose SPMG, WCMX and WCMT inserts for feed rate, diameter range and material.

Groove widths, arc radii, parting diameters and the failure modes that kill grooving inserts — a practical selection guide with size tables for GMM, TT32, VC16 and TBA6/TBPA inserts.

A quick reference chart mapping workpiece materials (steel, stainless, cast iron, aluminum) to the right insert series, grade and typical applications.

A practical guide to selecting the right CNC carbide inserts for turning, milling and grooving — decode insert naming, match coating to workpiece material, and avoid common mistakes.