I downloaded the Pompeii Oven plans for building the 42" Tuscan oven. They describe building the walled enclosure on page #55. I've never worked with metal studs, and I've never tried to build anything like this before. By chance are there any plans that describe building the enclosure in more detail? Is there an example build sequence posted here on the messageboard that you would recommend I look at? Thanks in advance for any help you can give me.