Things to pay attention to on making high-quality charcoal in carbonization process If your material is high in moisture, take 3-5 hours to evaporate the moisture of wood logs (small fire 90 -150 degree, white and heavy color water vapor smoke). A six hours step on carbonization is like the following: 150-280 degree (yellow and heavy smoke), 3 hours, 280-450 degree (thin and smaller smoke), 2 hours, 450-higher, 1 hour (lucid and blue color smoke). Long cooling time helps to make...