I was standing over my evaporator trying to come up with a solution for several minutes.

I said to myself, Gary you worked for the Railway in the Engineering department and you know steel expands with the heat. On the railway we solved the problem by making sure the rail was laid at a certain temperature and we would anchor the rail. None of those solutions applied here, but the thought of the iron angle iron was warping because of expansion and it had to go somewhere, gave me an idea.

I am thinking why don’t I cut the four foot length into three or four sections and allow for an expansion gap between them. My brain says that should work. A 12 or 18” section of angle iron will not warp and lift the pan, and it will still hold the firebricks in:

I have a neighbour coming over who works with metal and he may have other ideas, or he may give me feedback on my proposed solution.