@Gary Pilarchik Gary Pilarchik: Complete Steps for Building A Solar Thermal Soda/Beer Can Heater for A Greenhouse – MFG 2013 November 22, 2013
@Gary Pilarchik Gary Pilarchik: How to Drill, Seal and Stack Aluminum Cans For a Solar Heater or Solar Furnace – MFG 2013 November 22, 2013