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In this Boing Boing Video, PopSci columnist and author of the splendid and high-recommend Theo Gray’s Mad Science, explains how electrochemical machining (ECM) works and shows off a rig he put together to do ECM in his shop.

The entire how-to can be found at popsci.com.

Carve Steel with Saltwater, Electricity and a Tin Earring (Popsci)

More:
Theo Gray on why “safety” is overrated
Behold: the flaming bacon lance of death!

Gareth Branwyn

Gareth Branwyn is a freelancer writer and the former Editorial Director of Maker Media. He is the author or editor of over a dozen books on technology, DIY, and geek culture. He is currently a contributor for Boing Boing and WINK Books. And he has a new best-of writing collection and “lazy man’s memoir,” called Borg Like Me.


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