Stills can be purchased online. If your thinking of making one, do your research, they can be dangerous. (If there's a blockage in the worm, it could explode.)
If your thinking of making your own, there's plenty of different ways to do it. Consider sheet copper (learn a new ability,) then you could also run liquor with the obvious benefits of the copper. (Look it up.) Do research on that, tho. Dump out X amount at the beginning (the heads- or save it for fuel/cleaning purposes) and save the end of the run to run with your next batch. (The tails.)
Fuel wise, use gas if you can. You'll have control of the temperature and won't burn your (alcohol) wash.
Gas as in natural gas? propane? gasoline? white gas?
Propane, nice solid flame, easy to adjust, etc. It's very convenient. Natural gas, you can run a small still on your kitchen stove. However, I DO NOT RECOMMEND THIS. (Sry, really wanted that to stand out.) Of all the places to have a catastrophic failure, you don't want one in your kitchen. Any fuel source will work, the bigger point being temperature control. A camp fire works, just feed it slow. Ideally, you'll have a temp gauge on your still.
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