Let me start by saying this is a temporary, but cost effective way to clean up a troublesome rust hole on your car, it's always best to replace panels or weld when possible. but if you want to just clean it up for a while and cost is a factor. This video is for you! we eliminate a rust hole on our old 1973 Pontiac Ambulance. And yes, there is a bit more work to be done elsewhere on the car, but we just focus on the worst spot for now ;)