Accumulating tracking solar barbecue

[brian]

I made a new device for more easily forming parabolic dishes in august
last year. The "mechanical mathematician". Using a mechanical mathematician
is a major help if you make a tracking solar cooker. Initial guidelines
can be found at
http://groups.google.com/group/Sustainable-devellopment/web/tracking-solar-accumulating-barbecue
and video explaination can be seen at

Several videos are there
explaining the mathematician too. If you make one, please post pics of it
here or elsewhere. thank you Brian white