Bill details the key engineering principles underlying plastic injection molding. He describes its history and, then,  reveals the intricate details of the process. He shows viewers where to found, on any injection-molding product, the markings created by injection molding. He closes with a description of the one of the finest examples of the injection molding: the Lego brick.
<p>Overview video: <a rel="nofollow" class="external free" href="https://www.youtube.com/watch?v=eUthHS3MTdA">https://www.youtube.com/watch?v=eUthHS3MTdA</a>
Mold manufacture: <a rel="nofollow" class="external free" href="https://www.youtube.com/watch?v=seZqq1qxW30">https://www.youtube.com/watch?v=seZqq1qxW30</a>
Plastic bottle cap production: <a rel="nofollow" class="external free" href="https://www.youtube.com/watch?v=WHwTHarf8Ck">https://www.youtube.com/watch?v=WHwTHarf8Ck</a>
Making Lego bricks: <a rel="nofollow" class="external free" href="https://www.youtube.com/watch?v=wnRRDIFNxoM">https://www.youtube.com/watch?v=wnRRDIFNxoM</a>
</p>
99 Percent Invisible: <a rel="nofollow" class="external free" href="http://99percentinvisible.org/episode/the-post-billiards-age/">http://99percentinvisible.org/episode/the-post-billiards-age/</a>
<a rel="nofollow" class="external text" href="https://www.youtube.com/user/engineerguyvideo">engineerguy</a>
CC BY 3.0
<bdo lang="en" dir="ltr"><a href="//commons.wikimedia.org/wiki/Commons:YouTube_files" title="Commons:YouTube files">YouTube</a>: <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=RMjtmsr3CqA"><bdi lang="">Plastic Injection Molding</bdi></a> – View/save archived versions on <a rel="nofollow" class="external text" href="https://web.archive.org/web/*/https://www.youtube.com/watch?v=RMjtmsr3CqA">archive.org</a> and <a rel="nofollow" class="external text" href="https://archive.today/https://www.youtube.com/watch?v=RMjtmsr3CqA">archive.today</a></bdo>