It's been coming for a while, but yesterday I ran out of chemicals. This will signal the end of biodiesel making for me. There are multiple reasons, probably the largest one being that I plan to move to a warmer country in the not too distant future - so as part of the preparations I have to stop making bio.
It's been fun (sometimes), messy and educational. I've still got a few hundred litres of stockpiled bio that I intend to use up, and then the plant will be up for sale.