Learn how to set up a four-sided block in a four-jaw chuck to re-bore a clean hole for new bronze bearings on a metal lathe. Explore techniques for using a dial indicator with a hole attachment to ensure everything runs true in the chuck. Gain insights into centering, testing, and explaining the indicator, as well as the boring process and tooling required. Follow along as the instructor demonstrates each step, from initial setup to the finished bore, providing valuable knowledge for metalworking enthusiasts and professionals alike.