A structure including a circuit board including a plane and a pin-in-hole component; and a heat transfer device, where the heat transfer device is thermally connected to the plane at a leading edge of the circuit board, the heat transfer device transfers heat from a wave of molten solder to the plane. The system includes an elongated cover that extends across the gap from a first structural member to a second, spaced-apart structural member. The broaching tool includes a first set of broaching teeth configured to cut both a first flank portion and a second flank portion of a plurality of gear teeth. The cores having an outside diameter of 50 mm-1200 mm, a tapered angle of 10\xb0-45\xb0, and a slot depth of 10 mm-210 mm are advantageous.