How do I fix a stubborn drill chuck?

Recently I bought a used drill press at an auction. Everything works great except the chuck—it’s stiff and difficult to turn without using the chuck key, especially when cold.

Buy drill chucks online - fast & cheap for you

How to Change a Drill Bit on a Drill: Milwaukee, DeWalt, & More!

How do I fix a stubborn drill chuck?

makita M3702 Trimmer Instruction Manual

Perpendicular Holes Without a Drill Press

DEWALT CORDLESS DRILL CHUCK JAMMED

Self-Winding Leash for Wandering Chuck Keys

Cordless Drill Chuck Removal, 49% OFF

Power Drill Chuck Replacement - iFixit Repair Guide

DEWALT Drill Chuck for Impact Driver, Quick Connect (DW0521) - Power Core Drills

Wise Buys: Drill-Press Tables