DIY Solar Water Heater
Construct the frame. Pre-Drill the ends of lumber and attach the 4 pieces to make a square.
Center them onto the bigger sheet of plywood and attach.
Lay the copper tube piece into the frame. Drill a 1/2" hole where the tube meets the frame.
Insert the cooper into the frame.
Nail cut dowels into frame 1/2 inch down to create a frame for the glass. Make sure you pre-drill the holes to prevent splitting.
Spray paint the copper and inside of the frame black.
Attach coupling and swivel to pipe.
Lay glass in the frame... badda-bing-badda-boom!
This frame was able to maintain a temperature of 165 degrees.
Watch this video for more detailed instructions.