A2-Level Project - Solar Cooker Unfolding [Solidworks]:
http://mysite.wanadoo-members.co.uk/folderfiles/Solar_Cooker_Assembly.mov
[Apple Quicktime Movie File, 4.3MB]
Primarily targeted at poorer families in the developing world, to replace the burning of combustible fuels for cooking. ABS/PC plastic and steel version of cooker sold in west to subsidise sales in Africa and India. All components are replacable by locally craftable materials, effectively making the lifecycle of the cooker infinte: as parts fail, they can be replaced by the user [For example, the rotomoulded ABS stand can be replaced by a hand-crafted terracotta pot].
The main design challenge to overcome was creating a parabolic solar cooker that was simple and intuitive to assemble and use, no matter what part of the world you are from. Folding mirrored panels created the parabaloid shape, and a series of snap-fit joints ensured a painless assembly, with no need for adhesives. The panels tesselate together once disassembled to form a very small flat-package, ideal for shipping to any part of the world. Moulded-in pictograms facilitate easy assembly. With the help of the Intermediate Technology Development Group (ITDG) and careful materials selection, I have ensured that this solar cooker is sustainable economically, socially, and environmentally.