Make a Rotating Frame for a Solar Furnace

Assembling the base, the gimbal frame and the mirror frame for the solar furnace.



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Axle-housing and eyebolt detail.
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Drive rope mounting tripod.
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The solar furnace mounted on its rotating frame.
PHOTO: MOTHER EARTH NEWS STAFF
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Furnace completed thus far.
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Grip the gadget's base in the jaws of a vise
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Mirror frame and mounts.
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Slip a sheet metal "blank" into the brake.
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Make your first two bends, then line up your scribe mark with the hold-down bar's beveled edge for the third. Now just snug down the hex nuts and lift up the handles. Your final bend is complete!
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