The base is from a neighbor's trashed chiminea. Got lucky on that.
Most of this is on my food site webercam.com, the base is modified too. I took out about a 6" diameter hole. Assembly then as follows:
-lower grate goes in,
-a square of bricks go in the center to prevent fuel from getting directly beneath the cook surface. I found if fuel is directly beneath, the bottom burns waaaay before the top cooks.
-a dual hinged top grate with both side "flaps" up.
-a clay pot drip tray is placed on the top grate
-ignition starts with a chimney of briquettes, half on each side
-here's the fun part. I toss oak and redbud chunks in and maintain it like that. The clay cook surface is a size that still has enough room around it to get in several inch chunks.
-I use downed wood on my lot - Ohio has been windy the past few years.
-Takes a while to get the clay and bricks up to temp, maybe 30 minutes. I check the surface temp with an IR thermometer. Anything above 700F and it's ready to go, but 950 or so is better.
I'm currently cutting some pieces of wood slightly larger to give a longer burn per charge. Little twigs gets tedious.