Made one using a Sindoh DP200. Used MG Chemicals Cabon Print conductive Paint ( from Amazon) to cover the center piece. Just dipped (2x) them in and let dry. Tried on Onward and several other games and works great.
Very resourceful! How is the paint holding up?
Been using almost daily and no sign of any wearing. Looks just like when I made them.
Wall thickness: .8