Step 4 of 7

Step 4: Lay the two copper strips

Lay the + strip over both top squares, then up the side, across the fold and along the top flap. End it in a small square that lands in the middle of the battery square when you fold the flap. Lay the − strip over both bottom squares and up to a square about 2cm across, near the top, for the battery. Start a new piece at every corner and every fold, overlapping the last one.

The copper strips on the robot card. The plus strip runs along the top of both eyes, up the side and across the fold onto the top flap, ending in a small square. The minus strip runs along the bottom of both eyes and up to a bigger square for the battery. The two strips never touch, and each corner is a new overlapping piece.