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I used a 6 inch canister with a cookie tin style lid. The bread maker roaster captures most of the chaff because of its design. The cylone has a lower half which is just the canister and the diverter. The "cone" and chimney adapter are divided on opposite sides of the lid. There is a connection hose to the cooler so it blows smoke right out the same chimney, and not into my garage.The chimney adapter is an enchilada sauce can (because I can't help it). I threw this together in about a half hour. I admit it's rough. But it works perfectly. With no output fan necessary. Hope I didn't forget anything. Ben.