Understanding the Indexable Carbide Design

What happens here

The core innovation of the i-carb countersink is its indexable carbide insert. Unlike traditional countersinks that feature a brazed carbide insert which renders the entire bit useless once worn, the i-carb design allows for the carbide cutting edge to be rotated. The presenter demonstrates how the small, sharp carbide insert is held in place and can be easily accessed.

Goal: Explain the unique design of the indexable carbide insert.