A word of caution about concrete in the pan...
I remember using cutting torch on something that was setting on a concrete floor in my very younger years. Concrete when heated (super heated?) had a tendency to heat and crack (quite explosively) similar to an very cold ice cube that is exposed to warm air. Not sure what temps that was at when it occurred. There aught to be someone on this board that can speak to this phenomenon.
I would approach concrete with care...sand breaths and is where I will stay for the time being.
I remember using cutting torch on something that was setting on a concrete floor in my very younger years. Concrete when heated (super heated?) had a tendency to heat and crack (quite explosively) similar to an very cold ice cube that is exposed to warm air. Not sure what temps that was at when it occurred. There aught to be someone on this board that can speak to this phenomenon.
I would approach concrete with care...sand breaths and is where I will stay for the time being.