Originally Posted by mongo75
I was thinking about using a drill with a long paint mixing "bit" to mix everything. Or is there something easier or better to use? Also, I need to weld bungs or through pipes in the bottom of the barrels, should 1/2" fitting and pipes be best to use? When you drain off the glycerin, do you just slowly drain it until it comes out clear like the bio or do you siphon off bio first?
Been there, tried that
I use a 1/4hp 120vac electric fan motor [scrounged 0$] with a piece of 7/8" shaft. I just drilled a 1/2" hole in one end for the motor shaft, and the mixing blade?..........................an impeller from and old "302" FORD water pump
I would start with 1" bungs, you can always use a bushing, and it's real hard going larger.
My "receiver" tank has a pipe in from the top for pumping out the bio. I drain off the glycerol from the bottom drain first, then pump out the bio through a 6 micron filter. There is always about 2" of bio left in the tank because the suction pipe is about 4" off the bottom.
FABMANDELUX.
