so I did video and not sure if it worked. i need to mix more sand In mix. going to get fire brick from tractor
supply and line inside of fire box and removing clay from around outside of fire box and using brick. I think my problem with the mass not heating up was I put clay in at two different times and first layer was hard when i put second layer down. I took second layer off there where air gaps between them.so not making full contact with mass.