is duco cement good for crafts. I'm building a bridge and weight is going to be on it so if i use duco cement will the bridge be strong? the bridge has to hold 1,000 pounds at least and the pressure is going to be different on each beam.
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I would avoid cements as often as possible because they're not good for lungs and also won't be flexible when dry... and may not be as strong as you want for some situations. Not many glues would be good for a thousand pounds of weight, though of course that would depend a lot too on the exact structure of the bridge --some would require no glue at all. You also don't say what *kind of materials* you'll be using and various adhesives are better for different materials as well. I think you'll want to look into other things besides glues for holding 1000 lbs, but the strongest glues I know of would be the polyurethane glues like Gorilla Glue, etc, which is even used for concrete. GG has to be clamped or weighted while curing though since it will swell and extrude out at the beginning, but some of the later brands of polyurethane glue may do that less. I think you'd be better off asking this in an engineering or construction category than in the hobbies category ...there's probably something like that here at YA. HTH, Diane B.
