Disassemble and Internal Inspection

What happens here

Carefully disassemble the Makita cordless drill by unscrewing its plastic casing. Once open, inspect the internal components such as the motor, trigger switch, and any circuit boards. Note how critical electronic parts, particularly the circuit board, are often sealed or potted (encased in resin) to prevent water intrusion. Observe any signs of rust or moisture, especially on the metal components of the motor or the plastic housing of the circuit board. This reveals the design features contributing to its water resistance.

Goal: Examine the drill's internal design for water protection.