Question for a machinist

[pugs]

Yep, some older carbide insert tooling I've seen had separate chip breaker that you could slide upto and away from the edge depending on how big of chip you were making. most modern, average sized carbides are molded into the insert. Many mfgs have several different styles for different inserts, different applications such as roughing or finishing.

The little islands in this are the chip breakers, the dots are more for holding flat in the tool.