I am upgrading today's forge to a dismal success

I was able to coax the forge into drafting by cheating. I used an in-line duct fan at the far end of the chimney. 25 feet was enough ducting to dump enough heat to keep the fan under 140 degrees. I didn't cut the video, so it's stupidly long… Google+: View post on Google+ .

Anybody build a 'Venturi Exhauster'? I need to build one in a 6 inch air…

Anybody build a 'Venturi Exhauster'? I need to build one in a 6 inch air duct tomorrow. Just wondering if I need to do the 30/5 degree restriction as I want it to flow passively when not under power. Google+: View post on Google+ .