Subject: [Homestead] Steenblik flat spiral fresnel solar concentrator
Date: Tue, 31 Aug 2004 15:25:36 -0700
Every time I run across the ingenious Steenblik design I regret that my
downloaded images died with a dead hard drive. You can still find the
patent drawings here though---not as good as the lost articles, but
describes how to make his fresnell collector.
Made a hell of a solar camp cooker that you could carry under one arm.