distilling on a budget

[phatsteve]

Hi, As an enthusiastic home beer-maker (using mashing to produce fermentables) I would like to try some home distilling.
Unfortunately, due to redundancy, I have very limited funds. I intend to construct a stovetop pot still from an old
pressure cooker (I'm a plumber by trade).
My question is this, can I use a fairly modern aluminium pressure cooker? I really can't afford stainless steel.
If not, what about the variation on a bucket still shown on amazingstill.com?
I hope one of these low budget alternatives will work,and above all, work safely.
Many Thanks