Affix the aluminium strips so that they are 3 to 4 cm longer than the lawn edging. Alternatively, shorten the lawn edging with a pair of scissors.
Affix the protruding ends of aluminium strip onto the back of the lawn edging.
Place one end on top of the other so that they are overlapping by about 3 cm to 4 cm. Drill two holes through the aluminium strips and screw them together with three 8 mm VA screws. Don't forget to use the grommets on both sides. The two sections are now electrically connected.