You can make it from hardware store supplies. But as i said, i have not made one for it really is illegal for the purpose of what this instructable. I am considering obtaining a fuel permit to make E85. If I do, i will post pictures of what i made. But honestly, I am also kind of reluctant to post the ones I have designed for it took weeks to develop them. Many of them are a bit unusual but theoretically very effective. Additionally, there are many factors that will determine the viability of a still. material you use, length of parts, width, surface area etc. There are like atleast 15 different formulas that must be used. The information here, is really like everything you need to know except the making of a still. The images that are attached to this, is really all u need. replace the lab glassware parts for parts that serve the same purpose.
The power output of biodiesel depends on its blend, quality, and load conditions under which the fuel is burnt. The thermal efficiency for example of B100 as compared to B20 will vary due to the differing energy content of the various blends. Thermal efficiency of a fuel is based in part on fuel characteristics such as: viscosity , specific density , and flash point ; these characteristics will change as the blends as well as the quality of biodiesel varies. The American Society for Testing and Materials has set standards in order to judge the quality of a given fuel sample.