Thanks for the reply's and suggestions. I have several gallons of polyurethane from rencast that were given to me. It is a part a/b mixture and gets quite hot while setting. I have in the past experimented with making eg with it and it is very strong and rigid. It will stop a bullet from a 7mm without shattering. It will fracture a bit but stays together well in that situation. The reason I'm looking for a alternative is I had a bad experience with it the last time I used it. I mixed to large a batch and it got so hot it was curing to quickly. I abandoned my scoop and used my hands to fill the cavity before it got to rigid to use. It busted through the rubber gloves I was wearing and took a week to come off my hands. It was pretty bad. My thinking with the tightbond was if all else fails it cleans up with water. I guess I'll have to take my chances with the urethane again.
Thanks
Ben
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