Re-Annealing A Large Telescope Mirror With Bad Internal Stress

Here I attempt to re-anneal a 17.5 inch diameter telescope mirror that has a lot of internal stress and some other issues. I'm hoping to reduce the stress enough to rehabilitate it into a usable Dobsonian telescope mirror. This blank has multiple issues though, and some strange things happened when I fired it. Did I succeed? Watch the video to find out. Please visit http://www.mdpub.com for more information. My Home-Made Ramp/Soak Kiln Controller: http://mdpub.com/kilncont/index.html