Brian,

we might get a hole trough the foam with a "snake", but since the crossection is pear shaped there will be a lot of remains. So chemicals or some other post procedure followup would be neccesary.

Gary, you are a dangerous man! <img src="http://www.catsailor.com/forums/images/graemlins/smile.gif" alt="" /> I tought the mix of gasoline and foam (napalm) sounded dangerous, but your idea of using DC current to heat the mast is really nasty <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" />
I dont think we will try that. I imagine the heat needed would be more than what's good for the mast. I dont know tough..

We are going to rebuild the mast, so we will drill and remove all rivets. The razor idea might work. I dont think we will get enough tension on a 9 meter long hot-wire to cut well. Would need a thick wire to stop it from melting becouse of the current needed. Good ideas tough!