I always hesitate to give too much advice because I am not one of the experts. I have been torching for 5 yrs and have comprimised lungs so I have to be uber careful about ventilation. I have tried hoods, funnels and finally the Barley Box. The barley box is the only one that seemed to work for me.
This is mine, cost all of $30 to construct (not including the ventilation fan and pipe).
