Brewing...

I would like to hear the process required to brew biodiesel.  Does anyone do it?  What machinery/tools/plants/etc. are needed?  What is the cost of these materials, including upkeep?  Do you find it to be labor-intensive or pretty easy once you get the hang of it?  How long does it take to produce an adequate amount of fuel?  Any other information you'd like to contribute would be appreciated.