I've made my own smoke box ... ripped some 4X8 untreated plywood to make a 2X2X6 box, add castors, handles and ...put a vent at top and dryer duct vent 2/3rd way up on the side. I use my pellet grill to push smoke via the dry duct and 2 cheap walmart electric burners to add extra heat... So far works pretty good, can hang a ton of sticks, sausages, or logs in it... anybody else used these burners for heat source? any suggested improvements? Smoking 35# of wild hog/deer sticks and pepporoni in the morning... Last batch was "too smokey" so i'll probably dry for 1 hr, smoke for 3 and then kill the smoke..