Well, I needed more sinkers, and it's raining here in Ohio, so I decided the time had come to put in an exhaust fan in the workshop so I can mold sinkers rain or shine. 21 bucks later, I had a system that works pretty well. It vents out a nearby window, and uses a bathroom fan, dryer ducting and an adapter. Exhaust fan 12.97 Ducting 5.97 Adapter from 3 inch fan to 4 inch duct 1.47 Cardboard on side and back help collect the smoke and fumes for exhaust. Note highly complex duct system for fume exhaust. Remember to observe all recommended safety precautions when working with lead. Note, this is NOT an approved use of a bathroom fan, wiring and use are at the risk of the user.