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Old 04-08-2017, 11:23 PM
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Bondo questions

I'm getting ready to paint my 1967 bel air, I have primered it once, about to wet sand it down and put on another coat of primer but before I do that I need body work, the guy who had previously owned had hit a wall and messed up the right front fender. It has bondo in it and there's some spots where it's starting to crack what should I do to get rid of so I can put more in? Knock it out? Sand it out? Btw the cracking isn't all the way around it's like half dollar sized circles

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Old 04-09-2017, 12:23 AM
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Sounds too thick to begin with. Best remove it, see how bad it is, work the metal and then use as little filler as possible.
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Old 04-09-2017, 07:46 AM
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Using 80 grit on a dual action sander, featheredge the existing material until you find the deepest part of the cracks and eliminate any loose material around them. If you find filler a quarter inch thick or more, as suggested it would be optimal to remove all filler and do some metal work before applying new filler. If you are able.
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Old 04-09-2017, 01:41 PM
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You have your answers on the bondo,I will refer to your "wet sanding" the primer, DON'T DO THAT! There is no reason to wet sand anything these days but at the very least the clear coat for buffing would be it. Everything else can be dry sanded. You don't want to enter the water into the picture until it is completely sealed by paint and clear. DO NOT wet sand primer, I don't care what primer it is.

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Old 04-13-2017, 05:05 AM
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Quote:
Originally Posted by matt167 View Post
Sounds too thick to begin with. Best remove it, see how bad it is, work the metal and then use as little filler as possible.
sounds like its all done wrong so why not start by doing something right. Since you know nothing at all about doing bodywork buy a new fender. Can you remove and replace bolts? bondo and related materials are expensive getting cheap crap from pep boys is not the way to go, you'll spend as much money and end up just making a bigger mess so getting a new fender is the cheapest, smartest and best way. you can get a fender for 50 -100.00
Real body men cant repair a fender cheaper than buying a new one.
Would someone PLEASE tell me why everyone thinks body work is so easy until they go out and actually make a big mess of things Then they have the nerve to bring it to a shop and say all you got to do is finish it up and paint it.
Buy a new fender and don't be THAT guy or woman, if you had any interest at all in this work you would at least know something by now.

Last edited by deadbodyman; 04-13-2017 at 05:14 AM.
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