Printed book mailed to you.
Complete guide to DIY building of a unique solar heater using concentrated sunlight and hardware store materials.
Rewritten with new gen2 design and what I learned since the first book.
157 pages with +300 photos and illustrations. Printed book is black and white with covers in color. CDR or download has pdf of the book with clickable illustrations in color.
A detailed how-to manual with complete method and sources of materials together with a full size pattern and DWG files for the rib, hangers and motor drive base.
Published March 2014