don't want to give all the trade secrets away.....
just been on a 2 day course basically aimed at using my processor efficiently. which includes the health and safety (don't forget your messing with some nasty chemicals), the operation of the equipement, tasting the oil prior to transesterfication and testing after to achieve a good quality end product. I would suggest even with good equipment (and I'd like to think what I have bought is good) you're looking at 8 hrs (plus settlement time) once you become competent and after lots of practice perhaps as little as 6 hours (plus settlement). oh and don't forget all the time and effort involved in getting the ingredient for the chemistry, the testing equipment, collecting of the oil etc.....