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

Step 345 degree compound parabolic petal template

45 degree compound parabolic petal template
The first 2 images show the figures to make your own and the shape of the particular template.
Scale up until you get the right size.
Figures that are important for this template scaling are:
6.5 cm from top of the dish to the focus
The height of the dish is 11.7 cm and
the radius of the dish at the bottom is 12.3 cm
The cooking pot should fit in the scaled up 6.5 cm space between the focus and the top of the dish when the solar cooker is in operation.
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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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