Postby sonscar » 10 Dec 2015 19:14
It depends on what you expect,,some users seem to think that they convert rust to solid metal and then complain when they don't.Look up Rrustbusters and read all their site tells you and then make up your mind.I favour flap wheel,emery cloth, hand wire brush and best of all but exceedingly antisocial,grit blasting.Top the preped metal with epoxy primer and I feel you have done as much as you can.For cavities I prefer Dinitrol products,although there are many other products available all of which promise the earth.Have fun choosing and more fun applying.Steve...