How to get rid of rust

[ws140 10+ year member]

How do you get rid of rust on your car. I got this one spot where the rust is eating a hole in my car. I tried sanding it then repianting it. Any suggestions? I am thinking of bonding it up and hoping for the best.

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[tommyk90 5,000+ posts]

Originally posted by ws140 How do you get rid of rust on your car. I got this one spot where the rust is eating a hole in my car. I tried sanding it then repianting it. Any suggestions? I am thinking of bonding it up and hoping for the best.

Well, if it's only surface rust just sand it down to bare metal, coat it with a good primer and repaint. Maybe even do it on the other side. Now, if it's eaten all the way through your gonna have to cut out the rusted part and weld a new panel in it's place and do the same thing as above, prime and paint. Try to use as little bondo as possible, that won't stop rust, just cover it up, and then the metal will deteriorate and everything will fall off. Bondo's mainly used to cover up small dents and such.

 

[maylar 10+ year member]

You need to stop the rust process before painting it. Painting over rusted metal will only rust again. There are rust converter products made especially for that. Go here and post the same question to the paint gurus:

http://www.autobodystore.com/cgi-bin/config.pl?index

 

[kicker 10+ year member]

hey that trucks show had paint that is suposed to stop it dead in its tracks

but who knows best bet would be cut it out if it is bad and put in new

 

[jbl_marshall21 10+ year member]

Originally posted by kicker hey that trucks show had paint that is suposed to stop it dead in its tracks

but who knows best bet would be cut it out if it is bad and put in new

trucks is the coolest show on tv. well next to king of the hill. um where exactly is the rust on ur car?

 

[kicker 10+ year member]

ya i watch it every weekend its cool except if its a rerun but its still fun to watch

 

[tommyk90 5,000+ posts]

Originally posted by kicker ya i watch it every weekend its cool except if its a rerun but its still fun to watch

Did you see the one last weekend, with the 4x4 comp? That was a sweet episode. Those guys are nuts.//content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif

 

[kicker 10+ year member]

no i mised that one i wanted to see it but i was busy.//content.invisioncic.com/y282845/emoticons/mad.gif.c18f003ab0ef8a0d9c27ca78d77a6392.gif

 

[tommyk90 5,000+ posts]

Originally posted by kicker no i mised that one i wanted to see it but i was busy.//content.invisioncic.com/y282845/emoticons/mad.gif.c18f003ab0ef8a0d9c27ca78d77a6392.gif

Yeah, it was a good one. I do love that show though. That and Horsepower TV. Great shit. And i love how the ricer show isn't in the powerblock. Shows how TNN had to pick up a show that would be popular, but they still can show their disapproval in the fart-cannons. Gotta love TNN.//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[jbl_marshall21 10+ year member]

did u see the one like 2 weeks ago when they gave the f-250 like a 12 inch lift. then they gave it 38 inch tires. amazing!!!!!!!

 

[tommyk90 5,000+ posts]

Originally posted by jbl_marshall21 did u see the one like 2 weeks ago when they gave the f-250 like a 12 inch lift. then they gave it 38 inch tires. amazing!!!!!!!

Yeah, but they didn't give it a 12 inch lift. They gave it an 8 inch lift and then put the 38's on for a TOTAL of 12 inches. Still badass though. Did you see them tearing through that frozen little pond? That was sweet. Ice was flying everywhere. Cool shit. How about the episode where they put a propane and nitrous system on that diesel Chevy? Then it made like 500 some-odd horsepower at the wheels (i can't remember it exactly, it may have been more than that)? That was insane. God i love that show.//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[Savant 10+ year member]

AAAANNNNNNNYYYYYYWWWWWAAAAAYYYYY //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

You have to get ALL the rust off, not just most.. You could try to sand it off it it's 'light', but will probably have to grind it off or, as said, cut out that spot.. Rust is metal undergoing a chemical change based on exposure to Oxygen.. putting paint over rusty stuff won't remove gaps/holes/air pockets that are feeding the process under the surface.. That's why you have to get to "bare metal".. priming isn't a "must", but does a better job of sealing the metal than just painting, and provides a better bond between the metal and paint.. It's highly recomended..

Bondo (or bonding it) won't do you any good.. you can bondo over the 'dent' you get after ripping out the rust, but if you get that far (and don't really have the experience to do body work) you might as well bring it into a shop if you want it to look good.. If you aren't that worried about the appearance and just want to stop the rust, just grind it all out (and fill any holes with bondo) making SURE to get far enough beyond what you thought was the main rust spot to get ALL the rust, and prime/paint.. that will preserve the metal until you get around to doing a better body job on it..

Hope that helps..

oh, and that paint that 'stops' rust.. never actually seen it used or work.. But I'd guess they have some chemicals in there that evacuate all the oxygen then seal really well.. perhaps even a chem reaction with the oxidized metal that creates an intert gas to help displace the air?.. anyway, that's about the only way it could really manage to work.. but you are still better off getting rid of the bad metal and doing a proper prime/paint.. if you ask me //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[kicker 10+ year member]

ya the one from last week is on in may again.

oh and sorry we got off topic