Getting the Most Out of Your Expandable Collets

If you've ever struggled to hold a part from the inside while machining, you know exactly why expandable collets are such a massive life-saver in the shop. Most of the time, we're used to standard collets that squeeze down on the outside of a workpiece, but sometimes that just isn't an option. Maybe you're working on a thin-walled tube that would crush if you gripped it from the outside, or perhaps you need to machine the entire outer surface in one go without moving the part. That's where these internal-gripping tools come in to save the day. ...

May 2, 2026 · 7 min · Toni Fulton