John Gerlach wrote:
Steve Gettle article on it shows you more about it. His blind is almost identical to mine, and for good reason, both of us are friends of Dr. Al Charnley who came up with this design, but now he is a few generations past this one. I need to make another.
I've found a few blinds very similar on different sites. I'm thinking you had a few posts on DP Review? There is also an article by David Stimac that is entertaining as he goes through the building process and events that happen along the way.