Check out how to make an easier burning laser: http://adf.ly/2124994/dailymmakinglaser3756<br /><br />A green laser causes multiple reflections between two mirrors<br /><br />Green laser is from Dragonlasers at http://adf.ly/2124994/vldragonlaserscom<br /><br />No smoke, just mirrors. The beam from a 125mW Viper green laser pointer is projected between to mirrors with an impressive outcome.<br /><br />Video is courtesy of Pascal from France