1972 6 Cylinder Dragster :)
I'll take bondo dust, which is flammable...try it sometime, over the chemical drip gunk nonsense and the entire process. That's just me. I mean, apply chemicals, wait, cover with saran wrap, wait. Reapply chemicals, scrape...ok it took off 1/16" of paint, put more chemicals on, wait, scrape...oh I've got half melted paint and bondo on my putty knife, wipe it off somewhere, apply more chemicals. Continue this process until you get most of the paint / bondo off and then sand or use some mechanical means, now make sure you put something on the panel to neutralize the chemicals, wash the panel. Just not for me personally.To those that say this method is messy - try and manual sand an entire car then tell me about messy.
I own a house that was built probably in 1780 and I started working on refinishing some of the moldings and casings. I tried chemicals and they suck. The paint/gunk just sticks to everything and you wipe and wipe at it with rags or paper towels and it's everywhere in cracks and creases. Heat gun + scraper. Very arduous but consistent and the paint comes up, along with the lead aroma. yum.