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Old 07-16-2008, 03:51 PM
 
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removing thick layers of bondo

I have a panel that is just loaded with bondo. I am stripping the paint using a 3m clean and strip disc on a grinder (yes, I am being very careful with the grinder)
Anyways, my question is this:
Is there a less dusty or more efficient way to remove 1/8" of primer off of an entire truck bedside? I've read on here to stay away from the wire wheel.
Is there a chemical method? Does aircraft stripper remove bondo also?
The clean and strip disc is great for removing the paint and takes no time at all, but I'm going through the discs quickly trying to remove all that damned bondo. Any help would be appreciated.
Thanks guys.

BTW, the reason there is so much bondo is that someone welded a patch panel on (not in, but ON) the bedside and then plastered the entire bedside with bondo to even it out. I can't wait to find all the other surprises that await me.

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Old 07-16-2008, 05:13 PM
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use a torch. do not heat the panel but rather just make passes over it. it will gas out the bondo and turn it dry and chalky . i use a welders wire brush to brush it off. only takes a pass or two to work then repeat. you get carried away with the torch and you'll regret it.
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Old 07-16-2008, 05:14 PM
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i like a propane hand torch best. less heat.
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Old 07-16-2008, 06:20 PM
 
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Ok, I'll give it a shot. Thanks Shine.
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Old 07-16-2008, 06:55 PM
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You just drive a screw driver down in it and pry it down.

Saw this photo elsewhere on the net ... that's just plain out LAZY to use that much bondo.
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Old 07-16-2008, 07:15 PM
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Deuce,

There are bodymen and then there are sculptures.
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Old 07-18-2008, 11:42 AM
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An air chisel, just throttle it down and it will vibrate it off, and no it won't hurt the metal.

Rob

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Old 07-18-2008, 11:50 AM
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Quote:
Originally Posted by Deuce
You just drive a screw driver down in it and pry it down.

Saw this photo elsewhere on the net ... that's just plain out LAZY to use that much bondo.
looks like 3 layers to me
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Old 07-18-2008, 12:36 PM
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Quote:
Saw this photo elsewhere on the net ... that's just plain out LAZY to use that much bondo.
Lazy hell....that took a lot of work to get that bondo shaped and smoothed to perfection. LOL!!!
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Old 07-18-2008, 04:15 PM
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Deuce... A couple of years ago I did a job on a Barracuda that had the door done that way. At first I thought the same way as you. Then I thought about it and felt a little different. I know that I could not sculpt a door that is over 4' long that way and make it look straight. Whoever did that one was definately an artist. Not much of a body man, but definately a sculptor. LOL

BTW.... I straightened the door and used less than 1 tablespoon of filler total on it.

Aaron
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Old 07-18-2008, 04:32 PM
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I am certainly no body man, but I have been using a 8" ferro backing pad and indasa 80 grit to remove bondo. Dusty...for sure, but it works. I do that sort of thing outside anyway, so the dust blows away from me.

The paint (who knows how many colors) I am removing with aircraft stripper. It just gums up the 80 grit, if I leave it on and try sanding it.
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Old 07-18-2008, 05:40 PM
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I once made a knife out of a chunk of bondo that fell out of my quarter panel(prior owners work). It was way back when I was in body school, boredom + grinder + instructor in office = a knife carved out of bondo. I will have to look and see if I still have it, maybe I will post a picture.
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Old 07-18-2008, 06:29 PM
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this came from the cab corner of a 56 chevy truck. it was wadded up and shoved into the rust hole.
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Old 07-18-2008, 06:59 PM
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And I thought that removing 1" of bondo from my fender was bad.

Hope my cab is not like that.....
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Old 07-19-2008, 11:47 AM
 
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!!!

WOW! I thought I was using a lot of filler, and after seeing this I'm both shocked, and relieved! Ha ha, I don't know what else to say, crazy stuff. I myself have used the method of jamming a screwdriver/chisel in there and cracking that stuff off.
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