Reddit reviews Dritz Snap Fasteners 3/8'' - 7 Snaps/Pkg Nickel

Final electrode size is 2.5"x3.5" (6.5cmx8.7cm).

I used aluminum screen instead of steel because that was what our hardware store had in stock. So far aluminum has worked well for me, and I've also not had to deal with any kind of rust.

A friend of mine did the machine sewing (you can tell I'm not a seamster by the first and last picture). She used a white, heavy duty thread.

My experience using them: way nicer than my old sponges, less or almost no tingling/itching/burning. The voltage at the leads was under four volts (ca. 3.8V) at 2mA, and dropped to as low as 2.6V at 1.5mA after running it for a while. This was on bare skin for both electrodes.

Sources:

Lola Sponge Cloths (Amazon)

3/8" Snap Fasteners (Amazon)

You can find different aluminum screen products on Amazon too. I just got mine by the foot at the local hardware store.

Edit: formating, more details