I've done a few of those over the years, using clay or brick. It's a great project to kill a weekend with some friends and they can be really fun to cook with. You can do a pizza a minute when you get them hot!
Very cool and thanks for the pictures GBOYD!! SO the sand I see that is your "mold" for your internal shape of the oven and then you form the brick or clay over it? Looks like wine bottles in the base, I ave hear of that before.
I like that way of doing it, not these $1k+ kits. do it all by hand old school..
Got any links or sites you can point to do more details on materials/design for that?