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#1
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I have a problem that I have never been able to solve easily.
Does any one know a fast easy way to remove bondo from a car. The cars i seem to pick up around here have Bondo piled on more than a half an inch thick and the stuff that cracks is easy to break off but some of this stuff actually sticks on and is a pain to remove when it covers a complete quarter panel. I have try using aircraft paint stripper works good but takes too much to be useful. Tried using a DA sander but the bondo clogs up the Sanding discs and I go through too many sanding discs to be worth while. Also try wire wheels on the drill takes too long to remove a little bit and then messes up the metal under neath. Tried Chiseling the Bondo off this dents the body too much. Tried using a air hammer does the same as above. I have tried everything that I can think of short of baking the whole car to dry out the bondo but then I dont have an oven large enough to put the car in. I want to remove the bondo and reshape the body properly and then use fiberglass and sheetmetal to fill holes. Any and all help would be appreciated. Christian ------------------ 68 'Cuda 383 Working on adding EFI 69 'Cuda Race Parts Car 76 Duster 273 recent transplant 95 Neon 2.0 SOHC best of 16.96 84 Dodge Ram D50 transplanting 360 [This message has been edited by ChristianCuda (edited March 22, 2000).] |
#2
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Christian the best way I do it is with a 4" grinder with a wire wheel that has the individual brushes twisted to gether. and use a dust mask. Do you know what I talking about. The grinder has more rpm and power and does a quick job.
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#3
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Have you tried a heat gun? or a grinder with a finishing disk? I would like to know what works for you because i have a car that i need to remove bondo from too.
-Mike |
#4
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I just went through this with my 69 charger. I used a combination of things to get all the bondo off. First, I used my air chisel, at a shallow angle to take off the big chunks, then I resorted to a wire brush on a die grinder (lots of rpm) and it cut right through the stuff to the steel. I finshed with the 4 in sander to clean the steel off. The body shop thought it was great when I brought it in for paint.
------------------ Revtune |
#5
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Have you considered blasting?
No, not TNT! Media blasting, I think sand blasting may be too much, it might etch the metal underneath too much. Just a thought The Wyldman ------------------ Chuck 'Wyldman' Shelton 71 Dodge Challenger R/T 440, B5 Blue w/blk vinyl top [This message has been edited by Wyldman (edited April 06, 2000).] |
#6
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Thanks for all the replies
I am goingt o try someof these and I will get back with you all Christian ------------------ 68 'Cuda 383 Working on adding EFI 69 'Cuda Race Parts Car 76 Duster 273 recent transplant 95 Neon 2.0 SOHC best of 16.96 84 Dodge Ram D50 transplanting 360 |
#7
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Blasting with anything doesnt remove enough material to be worth while.
the 4" grinder with metal wound wire wheel works real good but leaves scratches in the metal but no problem I will just fiberglass over those. Thanks Christian ------------------ 68 'Cuda 383 Working on adding EFI 69 'Cuda Race Parts Car 76 Duster 273 recent transplant 95 Neon 2.0 SOHC best of 16.96 84 Dodge Ram D50 transplanting 360 |
#8
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I have found a small chisel at a light angle hit with a light hammer quite effective for deep bondo. Try and get the chisel as close to parallel with the panel to avoid denting it. I have plenty bondo in the rear deck of my Fury. Slowly dragging it all out... Wire brush in a suitable power tool seems the best for stripping the fine residue, but watch the heat generation... Mopar panels are pretty thick usually, but weakened panels (else why were they bondo'd up?) may warp with too much heat on them.
Good luck! Any better suggestions - especially quiet ones? I live in a quite tight residential area where old cars and working on themis frowned upon! |
#9
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If I have had to remove a large amount of bondo, take a torch, either acetylene or propane, and heat the putty. Then take a stiff scraper and scrape it out. It doesn't take much heat to loosen it, so you don't have to get things real hot, just a couple of passes will do it. Experiment a little, but it usually goes soft and scrapes right off. Finish up with your favorite wire wheel or sanding device, and always use eye protection.
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