I find that this paint remover, like others I've tried, basically removes one layer at a time. It takes repeated applications, typically 3-5 on most of my cruddy projects, to get "most" of the paint off. Seems like the deepest layers (usually very old original paint) just won't come off easily. Maybe it's the paint or maybe it's the fact that there is metal underneath rather than another layer of paint. Whatever the reason, it only partially does the job. Not to mention that you need to scrape, and it's messy, and the peeled layers of crud dry back into sticky "paint like" material. Ugh.I should probably stick with blasting, but the thick layers of paint make a mess of my glass beads in a hurry.