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Turn a flat sheet of anything flexible into a parabolic reflector.
Download this template and print it on cardstock, add something shiny cut it out and tape the edges together, don't cut all the way to the center. The ...
Wel, you're done, you can print that template out any size and go to town, the plywood dish at the beginning was made that way. However if you ...
Sort of, for the educated its based on the difference between the arclength integral and x, you can take it from there, for those not fond of thinking ...
You could just cut one out with a jigsaw like the one at the beginning, but for better accuracy I printed out a section and made a router ...
I want to say I acquired all these signs LEGALLY, with permission, from the dumpster of a polling place, and I'd really like to see more instructables based ...
quick work with a router, lots of plastic curls eveywhere, once they're cut out apply shiney aluminum tape from the hardware store.
And tape the peices together, or use cable ties, it came out a little peaked so I added a ridgid disk in the center to flatten the curve, ...
eventually I hope to turn it into a tracking solar oven with drill head motors. a word on the coroplast plastic in these signs, to glue it u ...
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Kyoto trough solar cooker mimics a parabolic dish without a thousand cuts!by gaiatechnician
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