I went and built my version of one of those dryers as seen on Youtube. The biggest "problem" was I had no clear cut guidelines as to how much and where insulation should be used. Secondly, the thermal siphoning using a popcan heater and my box was rather minimal in NE Ohio. Without photos it would be hard to critique my mistakes. I started to dry tomatoes but by the third day they went moldy. I used some used lumber for the window screen trays. Some tomatoes had dried but the majority went bad before drying was complete. My exhaust area may have been too much-- that could have been easily remedied. The heater was connected by a dryer hose(non-insulated). That in itself maybe an issue. The heater has 2500 sq in surface and the dryer has 1000 cu in of space +. I thought that should have handled the needs. I am determined to make it work but need some helpful ideas from people who are more experienced than I.
