/diy/ - Do It Yourself

>>963844
The box has a window to allow the sun light to shone through. It uses 2 pieces of glass. The inner piece of glass that experiences high temperatures is made of tempered glass. On my design, the glass section is not a lid. The lid is in the back as seen in >>963544

>>963707
Yeah, if you have the proper setup, parabolas and Fresnel lens are the way to go for fast cooking, like frying things. On a sunny day with a large parabola you can cook up a storm. For baking, you need a larger area, at which point things start to become very cumbersome. I don't recommend either for baking.

Frying with a parabola is a bit frustrating sometimes if the unit is very large. This is due to the fact your shadow is over the parabola when you're flipping the food around. There's also the danger of getting burned or even blinded.

On the other hand, a Fresnel lens is extremely dangerous for burns. More so than the parabola. This is because you can easily cross your hand over the food you are fixing in order to flip it and end up putting your hand right in the focal point. There's more of problem with blinding yourself since the focal point has a chance of reflecting the light depending on what is in the focal point. I suggest wearing strong UV protection when using a Parabola, but more so when using a Fresnel lens (check out the glare in this image from a Fresnel lens cooker).

Moving a non-folding parabola around is a pain and storing it is a pain; same with box cookers. But, you can also accidentally burn things with the parabola. A Fresnel lens on the other hand is even worse. You need to have a cover or pouch for it. Never move it around when uncovered. One simple slip up and you will catch yourself on fire instantly. You have to carry them parallel to the sun's rays to keep the sun from shining through it and hold it as close to your body as possible to prevent accidental fire.