From: Ernie Leimkuhler

honestly if you really get into
doing a lot of aluminum, you will want to set up a water cooled torch.


This is very true. In fact I'd recommend that you get a water cooled torch to
begin with if you possibly can. Use it for all your bench/shop welding and only
use a gas cooled torch in the field. The cooling water can be supplied by the
city or from a water cooling tank/pump unit. Water cooled torches are much
more comfortable to use for extended periods of time and are easier to use in
confined places since they are smaller for a given amp capacity.

Richard Coke