The instructions say to clamp it down with a tool-post
ring, but I've found that an upside-down tool holder secures it nicely.
He also has designed a device that allows someone with weak hands to make boxes without hanging the tool over the tool-post
The Dynabelter tool-post
grinder from Dynabrade uses coated abrasive belts to grind or polish steel, plastic, rubber, composites, and non-ferrous metals, holding tolerances of 0.
For ultra-precision punch facing, it can be done in a lathe using a small tool-post
I've found that almost the only reliable alternative has been to make a lathe set-up, where with a tool-post
grinder can be used to make an accurate pass.
Carbide-roller burnishing also increases productivity since it can be performed with the speed and feed of a cutting tool on the same tool-post
holder without removing the part from its primary machining setup.