This simple adapter can be used with either the 3- or 4-jaw chuck and fastens the chuck securely to the milling table or lathe crosslide T-slots. It slides into the T-slot and the chuck is simply screwed down on it until it tightens against the table.
Sherline Chuck-To-T-Slot Adapter
CA Prop 65 WARNING: Drilling, sawing, sanding or machining wood products can expose you to wood dust, a substance known to the State of California to cause cancer. Avoid inhaling wood dust or use dust mask or other safeguards for personal protection.
I can do all this through him who gives me strength. Philippians 4:13