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Bondo body filler?

J

Jiles

Well-known Member
Been putting off doing a little patching on a tractor fender.
Was looking through my shop and found an old one gallon container of [b:5d4c9e51e2]Bondo body filler[/b:5d4c9e51e2] that was 1/2 full.
I hate throwing anything away but the filler it too thick to spread.
Temperature is close to 80* so that's not the problem.
Is there any way to soften it up, or is it not worth the effort ?
 
Do yourself a favor and go buy some new filler.

Even if you got the old stuff to work, you don't know what the long term result would be.
 
Guess I will just garbage it.
Was hoping I could use acetone, MEX, or some other thinner.
 
I have use old stiff Bondo. You can buy a new tube of hardener at most parts stores as well as Walmart. I mix a small amount of fiberglass resin in with the hardener to get a smooth constancy. The fiberglass resin will even increase the bonding of the Bondo filler.
Try it on a scrap piece of metal and check for yourself. You can even tell trying to clean a screwdriver after using it to stir the Bondo resin mixture once it has hardened.
 
Bondo is the worst brand filler. Throw it away and go get some Evercoat. Or save it and use it for other uses like setting up odd shapes on the milling machine.
 
It's pretty cheap - I bought the smallest can I could find the other day, and I still got too much.
 
Over the years, I have probably used more then three gallons on projects from repairing large flower pots to patching wood trim.
Many-- Many uses for Bondo other then body filler.
Last time I used from this container was to fill Carpenter Bee holes in my Tractor Shed.
Really slows additional bore holes.
 
Kitty hair (really) is long strand fiber reinforced filler that actually does not peel off in a year or two. Auto Value sells it,
pro level material. Jim
 
(quoted from post at 18:20:26 05/27/17) Kitty hair (really) is long strand fiber reinforced filler that actually does not peel off in a year or two. Auto Value sells it,
pro level material. Jim
Click to expand...
Years ago I used, what I believe was "Tiger Hair" ; might be the same stuff?
 
The bondo brand isn't that good however to answer your question the stuff is fiberglass resin and solids. To thin it to make it usable you can add fiberglass resin and stir it good. The cost of the resin and the amount of work it might take to make it usable you probably would be better off pitching it and buy a fresh gallon. It takes me about a year to use a gallon of fiberglass filler so I normally keep a quart of fiberglass resin and add to it now and then to prevent it from getting too thick.
 
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