Re: 2013 Haspin, June 13th-16th
Tplane37, Thats not too bad of an idea, but I have to ask have you had any issues with the expanding foam pressing out the sides of whatever cavity its filling?
Only if you don't make sure it has an exit point for the foam to expand to. I would NOT go so far as to drill a hole in a sealed tube just to fill it up, because the foam needs to be able to expand and needs a way out.
Think of it like this, if you were to fill what ever void you are thinking of with water, and that water would freeze, would it bulge the surrounding material? It acts a lot like a soda bottle filled to the top with water and then sitting it in the freezer. If the cap is on the bottle when the water freezes it will break the bottle or cap, or it will distort the bottle. But if you leave the cap off, the excess will come out the top of the bottle when it freezes and expands. The same concept applies to the foam.
Once the foam finishes expanding and fully cures, just cut the excess off with a hack saw blade or box cutter. But I would not put it in an area that would prevent the foam from expanding freely. If you are worried about it sticking to something near the edge when it overflows, making tape quirks well to keep it from sticking.