Electro etched copper pipe

Electro etching copper pipe with salt water

This is my second attempt at electro etching copper using salt water. This time I used the Silhouette Portrait to cut vinyl masks which worked very well. I used a saturated salt solution of tap water and table salt. Then a 9v PP3 type battery. The battery drained in 30 minutes and I used a second one to complete the job. If I decide to do this again, I’ll use a mains adaptor.

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