Why Every Machinist Needs a Solid Turning Expander
If you've ever struggled to hold a thin-walled ring on a lathe without crushing it, a turning expander is probably the missing piece in your toolbox. It's one of those tools that you might not use every single day, but when you need it, nothing else really does the job quite as well. Most of us start out using standard three-jaw chucks for everything, but the moment you have to hit high precision on an internal diameter or keep a delicate part perfectly round, those standard jaws start feeling a bit clunky. ...