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Foam-filled mast
Locally at least, it's called "Great Stuff." Be advised that it is
incredibly sticky (wear disposable gloves) and that it continues to expand slowly, with significant force, for weeks after it's applied. It is waterproof and airtight. I don't think I'd use it on a mast except maybe for plugs at each end. Less is better. Once you've used part of a can, it's really difficult to come back later for a second task, kinda like 3M 5200 except the problem is the plugged applicator tube and valve. The solidified foam turns brown and crumbly when exposed to sunlight for any length of time. Roger http://home.earthlink.net/~derbyrm "Bowgus" wrote in message .. . I did it because I was going insane from the constant chiming noise something inside the mast was making snip styrofoam peanuts. Bob Swarts That makes sense ... and I suppose foam would have solved that particular noise problem. A very long application tube would be required initially I would think, to be withdrawn as the mast was filled, to ensure complete filling. But "Rob or Karen" did then say just to plug the mast. Home Depot here sells what's called Hotstuff (I think) foam in aerosol cans for home insulating ... but I don't know that it would provide the desired waterproof/airproof seal. Easy enough to find out though I guess ... plug the mast, head out to deep water and chuck the mast overboard ... "Rob or Karen" ... let us know how that works out :-) |
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