Originally Posted by MadMikeyL
Are you sure the bondo is going to hold? I would think bondo would just flake out as soon as the bumper flexes a little. Its too bad you painted it already. Hopefully it will hold up, but if it doesn't, you can get flexible sandable epoxy that is used to repair rubber bumpers and fill it in with that. That's what I used to get rid of the "mercury" in the left corner of my front bumper cover, and it hasn't cracked or anything.
People have no faith in bondo, its really not that bad....if used properly on what it is designed for.
If you pile it on thick, especially in a pressure or stressful area, then ya it will crack. The "SC" wasn't all that deep, and I can't see the bumper being all that stressful.
Also, it sucks in water because of the cheap resins used in it, but I don't think that will be a problem given the location.
I use all kinds of fillers daily, boats and canoes are my job, what I have find are the epoxy based fillers, while they are superior, are overpriced and require different finishing procedures than good old car in a can, especially for something like this.
Now, if it was a boat, or even a canoe.....bondo wouldn't even be an option. For light filling though, on something I own.....it should be ok (knocks on wooden computer desk)
If it cracks in a week, I will be a man and come back here and post it.....lol!