Which feature of an indexable cutting tool allows it to be used again after wear?

The feature that allows an indexable cutting tool to be used again after wear is the changeable cutting edge. Indexable cutting tools are designed with removable inserts that can be flipped or replaced once they become worn out. This design not only extends the life of the tool itself but also provides cost efficiency, as manufacturers can simply replace the worn edge instead of discarding the entire tool.

The changeable cutting edge is particularly beneficial in high-volume production settings, as it minimizes downtime and maximizes productivity. Operators can quickly swap out an insert with minimal setup time, ensuring that machining operations can continue smoothly. This interchangeability is a key characteristic of indexable tooling that enhances its effectiveness and usability in various machining applications.

In contrast, adjustable angles, fixed mounts, and enhanced durability do not address the core advantage of replaceable inserts as effectively. While these features can contribute to the performance and longevity of a tool, it is the changeable cutting edge that specifically allows for the tool's reuse, maintaining its cutting capabilities even after wear.