Paul my next batch will be with cotton seed oil. I intend to use the twostage with KOH rather than NaOH. The best I can do with NaOH seems to be 80-85% pure, I suspect that leaves too much water to avoid soaps. I'll take your advice and wash and dry it. I'll let you know how it goes. The oil collectors here buy the oil and sell to a soap factory. I'll need more experience to determine the break even point on oil cost, so far KOH is $100/25kg and Methanol $30/20l drum. I need to calculate the average energy cost. Any experience using glycerin as a heating fuel?
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