I built an EDM machine
? Kickstarter ? https://www.kickstarter.com/projects/rackrobotics/powercore-cut-through-solid-metal-with-edm?ref=ksr_email_creator_launch Dominik Meffort ?? https://hackaday.io/DerM4209 Ben Fleming ?? Applied Science video on EDM Rick Hartley’s Proper Grounding Lecture source