I started building a wooden bong a couple of days ago and i am almost finshed. The dimensions are (for the water tube) 2" by 10' and 4"10' complete with the fan shaft. I used a normal house fan and hooked up a smaller fan prop that i found. I havent tried it with a pump yet but I tried it with hot water main runing at fall blast. Went from 70-80 c to ambient. Air displacement is awesome. I am currently writing up an article and will be doen in a week or so. The wood is laminated with that plasic book cover stuff and ductaped like crazy. I am going to install a copper water collector in the bottom so there should be no leaking (no water will touch the wooden boards). Excuse my brief writing (in a hurry) Please write any comments (or mockings
