/diy/ - Do It Yourself

>>819120
>one-way mirrors

Joke aside, don't use these (I've seen people use them before!) They will shatter. You need to use tempered glass for the inner glazing and then you can use normal glass for the outer glazing. Don't use more than 2 panes of glass and don't use mirrors. The mirrors will actually reflect more light and not work very well. Just normal panes of glass reduces sunlight by as much as 10% per pane.

With these 4-panel solar ovens, you always need to use 2 glazings and the inner one must be tempered glass.

>>819118
Build a well-insulated box. Essentially a box inside a box with about 2 inches of insulation between them. The insulation can be layers of cardboard, crumpled newspaper, old cloth, or actual fiberglass insulation. Make a lid access into the box and an angle-adjustable floor inside the box. Don't use the glass as a lid.

Use 2 panes of glass over the top with about 1/8" air space between them. The inner glass must be tempered glass or it will break in the heat.

The reflective panels are best made as Trapezoids, not rectangles. Then you can put hinges on them. You'll be able to take them off and fold them up together for storage.

A good solar box oven with good insulation, double glazing, and large trapezoid reflectors can reach 450F in under 15 mins very easily. With food inside the temps will read far less until the food is finally being fully cooked. After that the temps rise sharply.

Don't try to cut your own tempered glass. Buy it pre-cut and design your box to fit.

Here's one mine. (old reposted pics)