diff --git a/calibration.html b/calibration.html
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     <div id="intro">
         <h2>Introduction</h2>
-        <p>This page serves as a companion for this video: <a href="https://www.youtube.com/watch?v=" target="_blank"></a></p>
-        <img src="img/thumb.jpg"/>
+        <p>This page serves as a companion for this video: <a href="https://www.youtube.com/watch?v=rp3r921DBGI" target="_blank">3D printer calibration revolutionised - Step by step to better print quality</a></p>
+        <iframe width="480" height="360" src="https://www.youtube.com/embed/rp3r921DBGI" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
         <p>It aims to make calibrating your 3D printer as easy as possible. If you find it helps you and you would like to say thank you, here is a donation link: <a href="https://paypal.me/testlawgicau" target="blank">PayPal.me</a></p>
         <p>Special thanks to my <a href="http://www.patreon.com/teachingtech" target="_blank">Patrons</a> for suggesting this video, helping define the contents and testing/proofing.</p>
         <p>Watch the video and then work through each tab. I have created a custom gcode generator to assist in making testing towers. This used to be a laborious process and beyond the skills of many users. Other times pre-sliced gcode was used from the internet, but it is impossible to have gcode available for every printer configuration. <i>Until now!</i></p>
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