Moparchat - Home of MOPAR enthusiasts worldwide!



Go Back   Moparchat - Home of MOPAR enthusiasts worldwide! > Technical Forums > Restoring your MoPar (Tricks & techniques)

Click here to search for Mopar cars and parts for sale.


Reply
 
Thread Tools Display Modes
  #1  
Old 03-22-2000, 06:19 PM
ChristianCuda ChristianCuda is offline
Moparchat Barracuda Owner
 
Join Date: Mar 1999
Location: Edinburg, TX 78539
Age: 49
Posts: 784
Red face

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).]
Reply With Quote
  #2  
Old 03-23-2000, 12:56 AM
duck duck is offline
Inactive User
 
Join Date: Feb 2000
Location: Hot Springs Arkansas
Posts: 33
Post

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.
Reply With Quote
  #3  
Old 03-23-2000, 07:23 AM
70Chall383 70Chall383 is offline
Inactive User
 
Join Date: Jan 2000
Location: Rohnert Park, CA, USA
Posts: 121
Post

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
Reply With Quote
  #4  
Old 04-06-2000, 05:08 AM
Revtune Revtune is offline
Inactive User
 
Join Date: Mar 2000
Posts: 47
Post

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
Reply With Quote
  #5  
Old 04-06-2000, 05:32 AM
Wyldman Wyldman is offline
Inactive User
 
Join Date: Jan 2000
Location: Sugar Land, Tx. USA
Posts: 17
Cool

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).]
Reply With Quote
  #6  
Old 04-06-2000, 02:32 PM
ChristianCuda ChristianCuda is offline
Moparchat Barracuda Owner
 
Join Date: Mar 1999
Location: Edinburg, TX 78539
Age: 49
Posts: 784
Post

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
Reply With Quote
  #7  
Old 04-11-2000, 07:56 PM
ChristianCuda ChristianCuda is offline
Moparchat Barracuda Owner
 
Join Date: Mar 1999
Location: Edinburg, TX 78539
Age: 49
Posts: 784
Post

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
Reply With Quote
  #8  
Old 04-11-2000, 09:38 PM
68fury's Avatar
68fury 68fury is offline
Inactive User
 
Join Date: Mar 2000
Location: Nottingham, England
Age: 54
Posts: 191
Post

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!
Reply With Quote
  #9  
Old 04-26-2000, 04:08 AM
Stoga's Avatar
Stoga Stoga is offline
Moderator
 
Join Date: Jan 1999
Location: WV
Age: 65
Posts: 8,586
Post

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.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
How much Bondo would I need.... Madman Stephan Off-Topic Forum 12 04-19-2006 11:30 PM
You remember my Bondo Boy? bjoehandley Off-Topic Forum 8 01-16-2006 11:34 PM
To bondo or not to Bondo that tis the question? Cuda4play Restoring your MoPar (Tricks & techniques) 8 01-07-2002 10:32 PM
Removing Bondo Any suggestions??? ChristianCuda Vintage MOPAR chat 4 03-24-2000 06:09 PM
Is it bondo? JoeD Vintage MOPAR chat 4 02-19-2000 02:38 AM




All times are GMT -4. The time now is 04:50 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
. . . . .