bondo removal

[Israel]

What's a good product to remove Bondo?

Got most of it scraped off, what stripper will do the rest

[richardgenox]

sand it off? lol

[wareagle]

Originally Posted by Israel

What's a good product to remove Bondo?

Got most of it scraped off, but stripper will do the rest

If the weather is nice, get a blow torch and putty knife. Seriously, that is what I did to get all that crap off my quarter rear wells.

Just make sure you are outside... And wear a mask. You don't wanna inhale burning bondo fumes...

[JohnnyK]

If you're outside, a DA with 40-50 takes it right off.

[bartl]

[wareagle]

If a PO has packed about 2-3 inches of bondo into some crevices, try the blow torch. Those sanders ain't gonna help in that situation. Plus, hell, you get to play with fire... It rules..

[dzahm]

x 2 on the heat trick (torch, heat gun, etc) and x 10 on not breathing bondo fumes from heating. The heat will cause the bondo to let go- you'll see it bubble loose, and then a flat putty knife with get the rest out. If you use sand paper you're gonna waste 100 bucks worth in a hurry. The heat trick can pop loose several inch thick bondo- its also fast compared to sanding. I use an oven to do mine- I set it on 400- put a fender/door/whatever in there- leave the shop for an hour- and it will be falling off the part when I come back.

Just reread: you have most off already- sandpaper will finish traces of bondo off pretty well. Stripper (aircraft) will soften but I think its more hassle then its worth (and don't forget what happens if there is a small amount of stripper in a crevice when it gets painted)

[Caper50]

I always used one of these


or this



Bart, I also bought a few of those 3M discs, man they work great in the air drill.

[sixseven]

With that much bondo is it worth saving the steel versus replacing the part?

[Mustmatt]

4" wire wheel on a grinder worked best for me.

[66GTUSMC]

Torch, with mask, a grinding wheel, I used them all to clean bondo. I liked going back and forth between them. Try not to get the panel too hot with the torch. The shop that did the paint on my 66 used a torch for almost all of the bondo.

[mjb1032]

[kevlarguy]

Heat for bondo removal is great just use an organic fumes mask and do it outside.

What is more interesting is what you can learn from this. I was removing some bondo and found lots of non-adhesion areas with light surface rust. Less than 50% of the bondo was adhered to the metal. I also noted the panel was incorrectly prepared with 40 grit paper and really did not have enough scratch to allow the bondo to adhere.

Read the directions for the fillers. You might be surprised how different they are from what your friend may tell you. Always remember paint and bondo adhere to lots of little scratches, not a few deep scratches.

[Israel]

Originally Posted by mjb1032

Funny azz picture AND a pm

You made my day

[Bucket Lister]

CAREFUL! Heat from either a torch or too aggressive grinding will warp sheet metal instantly. I'd grind, but slow and careful.