Hi Jeff, yes my set-up is unusual lol. The floor of the kiln was damaged and needed replacing and I had some refractory bricks spare. The kiln sits on a red wooden trolley that allows me to roll the kiln away from the house but I was worried about the wood catching alight. In between the bricks and the trolley is aerated concrete blocks which were being thrown out. It's a bit messy, but to find a steel trolley that fitted the job I probably would have to sell a lung to afford it so I put these waste items to use. I've since placed some fibre into the bottom which probably negates the bricks lol, but "in for a penny, in for a pound" as they say. Oh and if you're wondering about the epic length of the probe is because it's usually used on my gas kiln that has 6" walls. Cheers