I'm doing some "experimenting".
I was trying to filter after processing (without rinses), and ended up with something like translucent margarine clogging up my filter.

So, I started thinking.
What about making a settling tank for the majority of the soaps to settle out.

Then hitting the settled fatty acids with a "post-esterification" in hopes of making more Biodiesel.

you might not get biodiesel right away, but FFA' instead..

just a thought

-dkenny