That day might be at hand thanks to Powercore, a Kickstarter project that aims to bring the power of electric discharge machining ... metal from a workpiece. EDM machines put that fact to work ...

The linear electric machine-based gravity energy storage system (LEM-GESS) uses linear machines to vertically move multiple solid masses, or pistons, to store and discharge electrical energy.

Part 1 shows the start of the build using an old tap burning machine ... and the electrical aspects of getting a sustained, useful discharge. Part 2 continues with refinements that led very ...