Here's my first presentation in front of live audience! I covered: - Which one hurts more, AC or DC? - What kills, current or voltage? - Can we weld with car batteries? For more details, please see http://www.electroboom.com/?p=512 Follow me on Facebook: http://www.facebook.com/ElectroBOOM Follow me on Twitter: https://twitter.com/ElectroBOOMGuy By: Mehdi Sadaghdar