More Undercoating Questions

[eastcoastjava]

Well i just got a gallon of FF but I was wondering about a new style of undercoating.

My plan is to scrap all the rust from all the undercarriage/frame as much as possible, then apply rustoleum undercoating, or a bend liner all over underneath the truck then spray FF on top of that.

Or should i scrape, spay FF then undercoat with rustoleum/ bedliner?

[R&R Yard Design]

Nothing will stick to ff. Also ff works its way in to the metal. You could paint then use ff but that would be a waste in my book.

[eastcoastjava]

dont hate but i want to make the frame look nice and fancy and get rid of all the rust underneath

[redskinsfan34]

If you're really gonna take the time to scrape all the rust off of it, undercoat it. You won't need to put anything over the top of undercoating.