Hi Seth,
Welcome to the forum.
If I am not mistaken, the “metal maslow” was with reference to the sled and framing, and not to the material to be cut. There have been people on the forum that have had success cutting aluminum, so depending on exactly what you want to cut, the Maslow could work for you. You may want to search the forum to see what’s been done with aluminum cutting before making your decision, then either look in the swap meet section for people selling their kits, or there are a couple of vendors that are selling kits, including this thread