by Zak Griffin » Wed Jan 25, 2017 11:39 am
Good, it means you're thinking! haha
Build a 4" bubbler first, get it running and you will see how a thumper will help.
Think of it as a second boiler, heated by steam, that you can fill with all of the alcohol in the wash.
Instead of your alcohol returning into the boiler as you run and getting diluted back into the wash, it is caught in the thumper.