[TheForge] Foundry heat source

[Jerry Smith]

I am working on building a small aluminum foundry in
my back field. I will probably have a ton of sand
delievered to form the base of hot area.

What I am looking for is a heat source to get to the
temperature for melting many metals, around 1700
degrees F. I was thinking about using two or three
propane and something like these torches from HF:

http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=91033

I can get the cauldrons and some of the other things.
And propane is very do able out here in the country.

If some one has a better heat source that I can buy or
build I would be interested. I was thinking about one
with a blower for air, I have seen porpane forges
built that way.

Thanks,

Jerry