29/09/2026
Myth: Get every last cut out of an insert before indexing it.
Truth: Not always.
Getting maximum value from an insert doesn’t necessarily mean running each cutting edge until it’s completely worn out.
As wear increases, you can start to lose surface finish, dimensional accuracy, and process stability. Push it too far, and an edge failure could also damage the toolholder or workpiece.
In a stable production process, predictable tool life can be more valuable than squeezing out a few extra parts from an edge.
The goal is to index at the right time, getting good tool life without compromising the rest of the process.
Question: Do you index based on a set tool life, wear, surface finish, or wait until the edge tells you it’s done?