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Cutting 4 by 8 plastic sheet to cone parabolic dishes

 
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gaiatechnician



Joined: 06 Jan 2008
Posts: 32
Location: Victoria BC

PostPosted: Mon Sep 13, 2010 5:06 pm    Post subject: Cutting 4 by 8 plastic sheet to cone parabolic dishes Reply with quote

I need a half dish for a project and I decided to try the cone method to design the parabolic dish. Luck made the design fit a 4 by 8 sheet of corrugated plastic with almost no waste. (Full parabolic dishes from cones do not fit easily on a 4 by 8 sheet)
Here is the link
http://www.instructables.com/id/Make-a-parabolic-solar-dish-from-an-8-by-4-sheet-o/
[/img]http://solarcooking.wikia.com/wiki/File:Optimizing_use_of_8_by_4_plastic_sheet.jpg[/img]
I show cut marks for making a half dish, but if you ignore the cut marks, you have extremely good use of the 4 by 8 sheet!
I am sure others can play with this and get it better but even as is, it might be a great way of making transportable parabolic dishes. Just have the cuts made and velcro or zippers to zip the dish together on the spot!
Brian [/img]
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