Letter Re: Source for Reflux Still Building Plans

Sir:

In the letter titled “Stocking up on Copper Tubing/Pipe”, the writer mentioned wanting to build a still. For those interested, here is an excellent step-by-step guide to building a reflux still: http://designer-drugs.com/pte/12.162.180.114/dcd/pdf/still.pdf
I would be interested in hearing of any potential uses for a still other than making alcoholic drinks. I don’t use alcohol or any other drugs, but I am fascinated by the reflux distillation process and its potential uses [for fuel, disinfectant, chemical/formulary processes, et cetera] following a collapse. <>< – Stephen