I added some insulation to the bottom to hold heat in. I turn it on when I setting up so it has time to warm up. I try to get powders that take lower temps but the highest temp I need is 400 on some powders. I have seen some folks put high heat blankets around the the top and side to hold heat in.
Do you know how many people do this!? You sound like a idiot commenting when you have zero clue. You obviously don’t use this for smoking afterwards but they work great for powder coating