NOTE !!<br />This experiment has risks as flying shrapnel may be expelled from the CRT..<br /><br />Firstly I didn't expect the reaction to go so vigorously and the pressure build up was excessive.<br />An electric 12 Volt igniter was used to trigger the chemical reaction.<br /><br />Mix: 360 g KNO3 , 240 g White sugar , 50 g candle wax, 150 g iron sand.<br /><br />I created this video with the YouTube Video Editor (http://www.youtube.com/editor)