I wanted to build a cold smoker that would work well off wood chips because I can run tot he store and buy those as opposed to saw dust. Now, of course this will not burn as long as something like an amazing smoker but it will burn more then long enough for doing cheeses. Total cost was roughly $40 1 Rubber Made container 1 pack of 3 cooling trays for baking 1 pack of 5 foil trays (only 2 used) 2 soldering irons 2 replacement plugs 1 instant read thermometer Cut plugs off soldering irons, drill holes in tub, and pull cords through. Then ad new plugs Place soldering iron in foil trays as such Only reason you will want 2 is because when one tray smolders out, you can unplug it and plug the other in to double the time without removing the racks. Each try will last 30 minutes to 1 hr and produces lots of smoke. Towel did was replaced with upside down baking pan that I already had in order to prevent the bottom from melting out. Baking pan did the trick. Thermometer added to top Only issue I had was the initial towel was not enough insulation to prevent the bottom from starting to melt but I caught in time as I suspected it. Upside doen baking pan solve this. Also, smoke was maybe a little too heavy as the box was sealed. First run of cheese turned out pretty good but if anything maybe a little smoky. So future mods will be some vents that can be opened or closed to help control the smoke. I could also ad 2-3 more trays for additional smoking. May also add some rods that can be installed for hanging.