EXTRACTION CHAMBER

Drill two holes that can be tapped for 1/8NPT in one pipe cap. Make one hole centered, and the other off to the side. Drill one hole in the center of the other cap. Thread all three holes.

Liberally apply teflon tape to the threaded ends of the pipe barbs, without obstructing the passages. Thead them in nice and tight. Hmmm -- did I forget one barb in my parts count? Well, make sure you have enough . . .

. . .cuz I did forget the extraction chamber filter: That's two of those big shredded-wheat-size puffs of medium grit steel wool. Take the steel woll, and push them side by side up one end of the 10" pipe. Don't worry about being gentle, just that they are side-by side and get crammed in there. Then put the pipe end-down on a hard surface and pound the steel wool from the top as much as you'd like to. I used a hammer handle as a plunger . . .

Wrap teflon tape liberally around the filtered end of the pipe and cap it with the single-barbed cap. This is the bottom.

When the time comes, you will fill the pipe with up to 100g of chopped/ground stuff -- pot trimmings, bud, poppies, whatever. For now we'll leave it empty.

Screw the top cap on. Make both caps as tight as you can with pipe wrenches, but still removable.

Move on to "assembly."