The original four legs worked fine, but one of them was a little crooked, and made it difficult to move around. The smoker was designed to sit under a vent on the inside of a restaurant kitchen, and not be moved too often. I needed to be able to move it from the garage to the outside, so wheels were a necessity.
I cut the legs off so that the base with the wheels would leave it at the same height. The picture above shows the chunk of quarter-inch steel, again from the junkyard, that the square base came out of, and the three cutoff wheels that it took to do it.
We welded big fat swivel casters on the bottom of the plate, and since the plate was so substantial, it made a really sturdy base.
I don't have a picture of it, but to attach the plate to the smoker, I inverted the smoker, and set the plate on the cut-off legs, upside down of course, and then tack welded two opposite corners. We then set the smoker upright and checked for level and rocking. It turned out that I didn't cut the legs exactly level, and made up for that by inserting a plate underneath one leg, as shown below.
You can see the leveling plate under the right corner of the leg. You can also see that I'm not a professional welder. I have a $170 wire feed welder from Home Depot that runs off a normal 120V household outlet. It does pretty well, but the legs are a little thinner than the plate, and I burned some holes it them. My brother, a professional, says that I should have kept the heat on the thicker metal - in this case, the plate.
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