Ursula smith 2 772 views.
Salt water etching battery charger.
Vinyl mask for salt water etching copper duration.
Take the other alligator clip and attach one end to the negative part on the battery my green clip.
I find that you need to get it wet enough that it isn t just moist but it isn t dripping wet.
Metal etching with salt water and battery charger duration.
Dip a q tip in the salt water.
Place the steel wire inside of the container on the opposite side of the copper with the ring touching the bottom.