http://www.desware.net/ Encyclopedia of Desalination == Solar Stills == http://en.wikipedia.org/wiki/Solar_still Condensation Pit http://members.cox.net/ahicks51/osp/Technical_Data/solar_water/solar_water.html Black Box, one gallon per day Solar Still Construction Plans – US 7 Material list, cut dimensions, drawings and photos. PAYMENT SORRY – We do not accept credit cards! Checks or money orders drawn on US Banks. Send Check or money order to: EPSEA P.O. Box 26384 El Paso, Texas 79926 (915) 772-SOLR