Last weekend had some more progress made on the oven. I added an insulating layer and a heat sink.
Below is a layer of wine bottles to act as an insulating layer.
I packed the bottle layer with a mixture of clay slip and perlite. I would have used sawdust instead of the perlite but the sawdust place wasn’t open on Sat and I wanted to take advantage of the nice weather.
The last two pictures show the heat sink. Just a mixture of clay, sand, and water. This layer will have the oven floor bricks placed upon it and will (hopefully) help keep the oven at temperature longer. Exciting stuff.
The next steps will involve placing the floor bricks, placing the sand form, and then building the shell of the oven. A few nice days in a row may get me out there.