![Image](https://www.plasmaspider.com/images/burnbin.jpg)
They sell on Amazon for about $350. This one is only 2' x 2' x 4' h. Ideally I'd like to build a 3x4x4h to have the additional volume. But if anyone has something they've used successfully in the past I'd love to give it a shot!
See if this works for you. I combined both sides A and B from the original poster into 1 file.