Oil sucks, wind blows.
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http://phoenixnavigation.com/ptbc/home.htm
There was as well an article in the 'Home Power' magazine about the same method.
- Hannu
I think plaster is the best material the small forms can be moved and even mounted on plywood . paint the form to keep it and reuse it
am i missing something?
Is it two seperate devices? if so, how does the first (black) one work? (what is the attachment on the face?)
I am actually trying to do some solar collection experiments (like my wind experiments) to get a better hands-on perpective.