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"Compound" parabolic solar cooker, make a template with technical drawing

Step 2How to make the compound parabolic shape

How to make the compound parabolic shape
easy way to make a compound parabolic shape. You have a parabolic shape already with its focus.
All you need to do is rotate it as shown and you have the compound parabolic shape!
45 degrees acceptance angle gives a 3 hour solar cooking dish. The axis of the dish will be through the 22.5 degree line. Half of the acceptance angle.
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Author:gaiatechnician
I am a stone mason. My hobby is making new solar cooking and gardening stuff. I have used solar heat to cook soil for a couple of years. In mother earth news in January, i read that their compost expe...
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