4000° LIGHTSABER vs HAND?!?

Go to to get a 2-year plan plus 1 additional month with a huge discount. It’s risk free with Nord’s 30 day money-back guarantee! GET THE GOGGLES AND OTHER HACKSMITH MERCH HERE ► Become a Hacksmith member get exclusive perks! ► ►Early video access ►Project design files (solidworks) ►Merch Discounts ►Collaborate with us on our videos SOCIAL Website ► Facebook ► Instagram ► Twitter ► Patreon ► Discord ► Merch ► CHAPTERS: 0:00 Intro 0:12 For Context 1:28 Our Lightsaber 4:50 Science of Heat Transfer