What's cooking good lookin.
So the last time you got a sun burn you found yourself saying "man I got cooked
but good!" well now you can take that skin
frying power and you can use it to cook up some find food. Its easy and we are
going to show you how.
Materials needed:
Old window (got mine out of a dumpster)
Some plywood (dumpsters are the best source of this)
duct tape
black spray paint
cardboard boxes
some nails and a hammer (you can use screws and a screwdriver also)
a hand saw (or a power saw if you're fancy)
some old mirrors (or some foil and cardboard depending on what you have laying around)
Time:
The whole project was done over several days and took about 4 hours.
Pictures!
Check out the rest of the pics here
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Build Your Own Solar Oven:
So the idea of a solar oven is that you use the suns power to cook your food,
you basically make an insulated box
and cover it with glass. Then we use mirrors to bounce more sun into our box, this makes it even
hotter.
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First we need an old window, I "borrowed" mine from a construction site. Its your basic old nasty basement window.
What you are going to want to do is cut off the outside wood part off so that you can get the glass inside. Take your saw and cut slowly on one side until you hit glass, then remove the wood. Be careful glass is sharp (duh).
Now comes the "hard" part. By hard I mean it will be the most physical effort. you need to take your wood and make a box. The thing here is that depending on what size wood you have that will determine what size box you make.
You want to make your box big enough to hold at least one pot. If you make a box that is too small it wont fit your pot, and if you make it too big it will not get hot enough because there is too much air to heat up. I originally made a huge coffin like structure (we at The Sietch get a little excited about these things). I found that it just wouldn't get above 200 F, no matter how big my reflectors. I then cut it in half to a box 14 inches high and 26 inches wide and 17 inches deep.
A bit of measuring and cutting and nailing later and I had a nice little box made. I then went and raided the local dumpsters for cardboard.
If there is one thing you can count on is that there is always going to be lots of cardboard boxes laying around. No one will miss a couple. Take your duct tape and line all the inside seams with tape. This will help to keep heat from getting out between the boards. Then take your cardboard and line the inside of the box until you have about 1 inch of cardboard on the sides and bottom of the box. I found that it was easiest to use large pieces of cardboard and jam them in tight instead of trying to use lots of smaller pieces and tape or glue them in. Pay special attention to the top of the box you want to make sure the cardboard is all one level so that it makes a good seal when we lay the glass on top of it latter. When you are all done you should have a nice looking box with a nice smooth top. As you can see I have painted the box black (the tape was later painted black also), now this is just so that it sucks up more of that good old sun heat. Make sure that you use paint that says "lead-free and nontoxic when dry." on the back. Unless you like lead, I find it rather bitter and not very good for seasoning. I had a great find the other day while going through dumpsters some mirror!! I find these all the time but they are almost always broken, if you are not lucky enough to find mirrors you can use foil and cardboard (use a mix of white glue and a little water to affix it to the cardboard). You can paint the inside black as well to collect even more heat.
You might want to clean your mirror better than I did. Now here is the part I am going to leave to you, you need to find some way to affix the mirrors to your box so that you can reflect the sun into the box. I used some wood and rebar that I found to rig up a holder that sits separate from the box. But really the sky is the limit. Some tips for solar cooking, put your food out in the am with your reflectors facing south (or if you live in the southern hemisphere point it north and at the equator point it where you want), and when you get home it will be ready to eat. Most things take about twice the recipes cooking time. But the nice thing is you cant really overcook in a solar oven so once its cooked your food will just stay hot and ready to eat. Also if you can paint your pot black and put it inside an oven bag, this will make it get hotter faster and stay hotter longer. You really only need a day that is sunny 20 minutes out of every hour. Another tip, if you can find some sheet metal and paint it black and put it in the bottom of your box it will collect heat and help to keep your food hot. I have run several tests on my oven and it gets up to near 400 F, it can go from ambient temp to 120 in about 10 minutes. So even if you don't leave it out all day it will cook your food in a couple of hours.