How do you remove rust?

Question

I need to remove rust off the wheel well of a car. It is on the edge. I want to remove it and bondo it so the rust doesn't spread, any tips?

Answer 1

You don't say how much rust? It doesn't sound like a huge amount though so why not use KBS Coatings and do it yourself. If you buy their KBS system sampler for about $16, you'll have more than enough products to do the job right and do it permanently. First wirebrush or sand off the loose flaky rust. Clean the area with some Aquaklean to remove contaminates like grease, road film, etc. Use Rustblast to neutralize the rust, coat the metal with zinc phosphate and provide a metal etch. Then use 2 thin coats of Rustseal to permanently block all metal pores from moisture & oxygen thus preventing all rust from returning.

Answer 2

if the rust is on the outside it probably is more of a problem then you know. You need to get all of it off or the cancer will spread and ruin the time you spend to fix what you have now. Really the best bet is to find a replacement fender for the vehicle you have. If it is a rare vehicle then you still should remove the fender cut out all the affected area and replace with a similarly shaped peice of sheet metal. then start with the bondo over the top of that to elimitate the sanded weld seems and any imperfections in the surface or shape of your new patch.

Do it right the first time. It's too much work to finish the rest to do a half assed job at the start.

Answer 3

The only rust removers in a can I would trust are things like muratic acid that are caustic enough to disolve rust and leave behind pure metal.

It depends on whether the rust is on the surface or all the way through the car. With surface rust, you can use a sanding disc to sand it down to bare metal. If it's all the way through, you'll have to whip out the Sawzall and cut it all away, then weld in new metal or create a fiberglass patch.

The only way to remove rust is to physically destroy all of it, or it will come back. I've learned the hard way that chemicals that "neutralize" rust often don't work.

Answer 4

You either need to sand it all away or cut if out. You can coat the bare metal with a zinc chromate, it is a yellow liquid and penetrates into the metal. Unless you get all the rust out it will just keep spreading. The zinc chromate will penetrate deeper and does not leave streaks if you brush it on. You can also primer over in. The best primer is red lead if you can find it.

Answer 5

Sand blasting is a good way. You can also get OxySolv Rust remover. It desolves rust completely and leaves a zinc phosphate coating. It can be sprayed or brushed on. Eastwood Automotive Supply has it. Look them up on the web.

http://eastwood.resultspage.com/search?p=Q&ts=custom&w=OxiSolv&submit.x=25&submit.y=13

Answer 6

Bondo actually retains moisture. The best way I know of is with a 4" grinder. You could fill with fiberglass and level it out. Good luck.

Answer 7

You can fix it. But where I am from, Sandblasting fee's are a minamal $50.00 / hr. and then the repair cost. I would replace the fender if you can, depending on the make and model of the vehicle.

Answer 8

the best thing i know of is to sand blast if its not to extensive and go from there also use a metal sealer before you bondo and prime.

Answer 9

there is stuff you can buy at any auto store or any walmart or stores like it call tarn-x or rust removal it garented to work if not money back and pay for damages

Answer 10

Try some coca cola and a cellulose sponge