Drilling

Match the cutter, shank, operating mode and hole purpose to wood, metal, masonry or tile before choosing speed and pressure.

Use repeatable scanner readings and independent clues to locate suitable framing, while assessing concealed services separately.

Distinguish pilot, clearance and countersink holes, then follow the actual fastener and substrate requirements.

Identify tile and backing, plan approved support and wet-area sealing, and use the cutter's specific starting and cooling method.

Interpret scanner responses as limited evidence, compare consistent passes, and stop when the wall or detector cannot resolve uncertainty.