What every home needs: A home-built fire-breathing flying dragon. August 29, 2012 at 9:42 am Robert Zimmerman Points of Information What every home needs: A home-built fire-breathing flying dragon. Leave a comment aviation, Dragon, engineering, hobby, radio-controlled airplanes
Archimedes – Marble Roller Coaster July 21, 2012 at 6:01 pm Robert Zimmerman The Evening Pause An evening pause: This is cool. Leave a comment Archimedes, art, engineering, entertainment, hobby, marble roller coaster
