Years ago, SIG used to sell a 2 part mix up urethane expanding foam. Actually fun stuff to play with I just checked their site and the do not seem to offer same anymore.
I have just screwed up a small project and I have a void in a wing that I want to fill,
but I do not want to use the stuff from home depot, you know That stuff in the red can.
It never stops growing...
Any ideas
Mix a few drops of water with polyurethane glue. Pour off any excess water. Expands by about 20x. Get rid of excess before fully hard. Experiment first.
-- Andrew E. Mileski
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