<iframe width="580" height="385" src="https://www.youtube.com/embed/IdawDnXa39o" frameborder="0" allowfullscreen></iframe> <br>A CO2 laser machine is a type of laser cutter that uses a carbon dioxide gas mixture, excited by electricity, to produce a beam of ... <br><a href="https://www.youtube.com/watch?v=IdawDnXa39o">source</a>
