<iframe width="580" height="385" src="https://www.youtube.com/embed/UtQTIZSf8Mo" frameborder="0" allowfullscreen></iframe> <br>One of the most useful things you can do when starting a build is to prototype it first by hand with cheap and lightweight materials. <br><a href="https://www.youtube.com/watch?v=UtQTIZSf8Mo">source</a>
