Make: Online : The Light Sharpener - 12 foot solar collection satellite dish

The Light Sharpener - 12 foot solar collection satellite dish

Solardish170
Solardish211
Solardish214
Rob continues his pursuit of sun powered cooking with a homemade 12 foot solar collection satellite dish, here's the latest... and a VHS tape too - Link.

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Posted by: cockerham on August 1, 2007 at 5:06 PM

Although it isn't exactly useful yet, it sure looks awesome and is incredible to see in action. I definitely need to set up some speed challenges vs. a microwave oven.

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Posted by: cockerham on August 1, 2007 at 5:09 PM

It will ignite a 2x4 in 20 seconds.

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Posted by: satype on August 1, 2007 at 8:06 PM

Rob, this is the first time I've seen you tagged on the Make blog before, but I've been waiting for you to have an article in Make forever!!! Maybe a combination of costume design and pyramid scheme busting?

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Posted by: Unomi on August 2, 2007 at 1:48 AM

Isn't it possible to put a tube just over the focuspoint and let water run through it?

It think when at a camp you can have warm (hot?) water in a minute. Ok, one have to adjust the dish every so often. But the idea to have some heated water?

Or will the tube melt? Any ideas what kind of material withstands such heat?

- Unomi -

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Posted by: Russtang on August 2, 2007 at 9:50 AM

Very cool!

I bought this giant fresnel lens a couple years ago.

http://sciplus.com/singleItem.cfm?terms=13603

The kids and I have great fun melting pennies, golf balls, asphalt... ;) Just remember to wear welding goggles if you enjoy your sight. Staring at that concentrated point of light for any amount of time will leave nice big spots on your retinas...for hours. Trust me!

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