On Saturday, October 17, 2015 at 10:02:32 PM UTC-4, Phil Kangas wrote:
Here's an interesting weld procedure that is fun to watch!
I wonder how many times they tried this before it actually
worked, eih?

http://www.liveleak.com/view?i=2c6_1444995882

So, has anyone tried this yet? I don't have a welder at my disposal, but this is extremely interesting.

At 2:15 in the video, you get a brief look at the bottom. It looks like the weld penetrated all the way through. Pretty impressive.