How to strip polyurethane from wood furniture effectively?

To strip polyurethane from wood furniture effectively, you can use a chemical stripper specifically designed for polyurethane. Apply the stripper according to the manufacturer's instructions, then scrape off the softened polyurethane with a putty knife or scraper. Repeat the process as needed until the wood is free of polyurethane. Be sure to work in a well-ventilated area and wear protective gear.