By Rick Da Tech
This still was posted on the infopop forum in 2005 by troy. It is one of the cleanest simplest stills for recovering methanol from glycerin that I've seen so far.
Methanol is the co-solvent that holds impurities in biodiesel. The GL Method removes the methanol from biodiesel then settles out any remaining impurities, including soap and glycerin.
There are lots of ways to build a condenser. The simplest is a coil of copper in a bucket of water. Here we build the "Plumber's Delight". It is the condenser most often used with the GL 1 day process. It is a copper tube in tube condenser.