Homestead mailing list

[Tvoivozhd <tvoivozd AT infionline.net>]

For a lot of things like making your own wind-turbine propellors, a 
hotwire foam cutter is the best way  to go---what would normally take 
you a couple of days is accomplished in an hour---and much more 
accurately, which is essential to the balance you have to have to avoid 
shaking your wind-turbine apart and having it fall (dangerously) to the 
ground.

http://oldriverbillzumwalt.members.ktis.net/homemade-tools.htm