They mail out samples free, and their minimum is 150 sq. ft. As it stands now my machine will need roughly 60 sq feet of that . So the 150 sq. ft. buy breaks roughly into 3 machines. This is good news. Because , I have just ordered the rest of the stuff I need online. That being the wheels.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg00Fki7qcI2aOOw_edtUd0TG709rxKy7o9TEC3g6ZCS4XS_jglIMe5juyAP_y1PDfJsQGndhY1U6Qb4hJWQjPgVXzw0eL1cy-1nfKlKqDRMCRaMv2seubRbJb5N_kllcnToq5R5Y_aYvU/s400/Picture+47.png)
The other solar age material I bought was this stuff :
ProDex
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiWIH1pp8_zAf7YN5Xx_9XhWaf2201wlc-cXilRT5wEQB5GvfxKADyVddb_1UFJxbUmZUL07_lhPJRIAKQJmggDu3XwEB_E10LVf949wz2oKZKpDdqzOUeigL48qwTBLJ2hw9jidJY_wv4/s400/Picture+46.png)
The Prodex and steel sheet.
The outer shell of the oven will have this next to it. Then a dead air space, then 4 inches of some old insulation; rockwool board insulation.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiNU3zPkWXUlBdhcYjlPj5ejA8gKGJ_a-gjIdD3KD4-mCJ68GkbmBckdSrphaV6xfmrUo1vKSCuNUJYVLIwVWay8e4i_JhT6pSpC47XKAz7TB4v4Bez1g3Ym9RiJgkv65DxbVw2WRq5TNc/s400/Picture+44.png)
I'm building a pizza oven, that weighs like a box kite.
These two materials will give me something like an R - 40 wall under 6 inches thick. And it won't weigh anything. I will be getting the piano hinges from ebay when the time comes. I've got a feel for that cost. Taking in all the research to date. This oven isn't going to cost more than $700.00 in materials.
So here is my latest projection tonight -
A 15 cu. foot oven on wheels , that works when the sun shines. That 2 guys can pick-up , and load into a pickup.
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