Video: The Advantages of Serrated Button Inserts
Although round cutting inserts have a well-deserved reputation for efficiently roughing contoured geometry, they sometimes work best when they’re not perfectly round.
Machinists aren’t likely surprised by the fact that the tool used in the long-reach application depicted in the video above features button-style inserts (courtesy of Ingersoll Cutting Tools, the video showcases the Formmaster R). Look a bit closer, however, and you’ll notice that those double-sided inserts aren’t perfectly round. Rather, the cutting edges are serrated. Employed correctly, a toothed edge can add to the strength and stability that have made button inserts so popular for heavy roughing. This January-issue article provides more information.