I have had to strip Paint from furniture in the past and used a product called Kleen Strip. It yields good results but is nasty to get on hands or exposed skin.
I have a panel & glazed door with 7 or 8 coats of paint to remove. The Big Box Home Store recommended the thickened variety. On a test area 9" x9:" one application took off two coats, second application took two or three more. Too slow.
Next tried applying a generous coat of the thick goo, covered with a piece of plastic which had been the liner of a cereal box. Not a clear plastic wrap but a thicker, tougher, and semi-transparent material which I expected would contain the solvents.
It did and after letting it work for about one and a half hours the solvent had penetrated to the wood and the paint came up fairly easily.