<iframe width="580" height="385" src="https://www.youtube.com/embed/AD2JsJf69ME" frameborder="0" allowfullscreen></iframe> <br>I design, build, and demo a rear-loaded horn using the Gweike Cloud Pro 50W CO2 laser. The Laser: ... <br><a href="https://www.youtube.com/watch?v=AD2JsJf69ME">source</a>
