So my father in-law has this little charcoal BBQ pit and he said I could have it. I want to take it and turn it into a solid fuel forge, but im not really sure how. I have access to sand( mixed with rocks), clay( red I believe), roof shingles, and coals from a burn pile ( only sees wood and cardboard). So my plan is to make a side blast JABOD forge and I have no idea how.  Im figuring I can line the inside of the BBQ with shingles, then fill it with sand, and pack it with clay. The air