re: Durhams Rock Hard water putty

Tony I went cheap once, and swapped to Bondo. I think pound for pound there is like a 2 cent difference per ton, but I went with Bondo. I couldn't keep it in wood long enough to sand it flat, kept breaking out as I tried to sand it. Swapped back to Durhams, and never had that again. I followed the instructions, maybe just wasn't meant to be? I know a lot of people use it, but this is made for wood, and Bondo is made for metal, that was all I could figure what the differences were.