using some sort of chemical that is like peel away. In home friendly and all, BUT, I for one still like the sand blasting method. Its not a nightmare like you may think. You need of course a compessor, and the blasting rig, which sells for about $40 or rents much less. The sand is cheap and re usable minus the paint chips. But the key is to make you a nice plastic tent. This believe me is the key. Once the work is contained in its own bubble, the work can begin.
Use eye, lung, and skin protection of course.
Then the job is very easy and quick and does a bang up job.