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Jake writes in with his latest project –

“I used a 19th Century technique called electrolytic etching to create brass cover plates for a set of Moleskin notebooks that I plan to give as gifts these season.”Link.

Phillip Torrone

Editor at large – Make magazine. Creative director – Adafruit Industries, contributing editor – Popular Science. Previously: Founded – Hack-a-Day, how-to editor – Engadget, Director of product development – Fallon Worldwide, Technology Director – Braincraft.



  1. ehrichweiss says:


  2. Haqn says:

    I think plain old table salt instead of copper sulphate will work for etching. I am not sure. I seem to recall that from something I was playing with a long time ago. Someone should try it out.

  3. refuter says:

    Can anyone help out and explain where to get such a battery or give advice on a good (Safe) tutorial on how to use a power supply or something similar for this project.


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