If you have a 12v 6-8 amp battery charger you can make a hot wire cutter that will handle a 4' piece of foam. Just build a large band saw table top style and add a dimmer switch extention cord to the batter charger to controle the heat. Not sure where too get the wire, mine is only 24" high and I use a steel guitar string about .010mm.
Note: a 2x4 and an a 4" angle brace can be used for the upright.. there is really not that much tension on the wire, mine is way over kill...
http://65.78.32.161:666/home_made_tools/hotwire_cutter/index.html
Note: a 2x4 and an a 4" angle brace can be used for the upright.. there is really not that much tension on the wire, mine is way over kill...
http://65.78.32.161:666/home_made_tools/hotwire_cutter/index.html
