I noticed an ad in Mother Earth News selling a biodiesel "still" and it intrigues me. Has anyone here on the forum made biodiesel? The website is www.makebiodiesel.com , if you're interested. The set-up they sell costs $3,000. Says it makes 40 gallons in 24 hours, using 40 gallons of waste fryer oil, 8 gallons of methanol, and 2 packets of Red Devil lye. Supposed to be able to make it for 70 cents a gallon, and you can use it in any diesel engine without any adjustments or alteration to your engine. Undoubtedly one could make a "still" from scratch... And if you have looked into it and decided not to pursue the idea, why? Any good websites you can recommend? I guess one of the byproducts is glycerine -- what can you do with that, besides lube a pig?