All the methods outlined will work, but there is a better and less expensive way to do the job. Dyna 2 stripper is a non-hazardous, non-methylene chloride based remover that does all the work for you. Just put it on once, wait a hour or two, then scrape it off. It doesn't stink, won't burn your hands, and penetrates to the bare wood in one application. The waste is biodegradable, so there are no hazmat disposal fees. You can let it sit on the wood overnight and take it off the next morning. It will not effect glue, so you'll never get veneer lifting. I sell this stuff through my PianoLac website. GDPR (the piano rebuilding arm of Faust-Harrison Pianos in NYC) use it exclusively. There is no faster, easier way to strip a piano. It's also great for stripping plates, as GDPR has discovered.
This PTG archive page provided courtesy of Moy Piano Service, LLC