During the final body‑in‑white grinding stage, the air‑driven angle grinder is mounted on the assembly line to remove excess weld flash and level panel seams before paint application. Technicians hand‑hold the tool to trim door‑frame edges, while automated robotic stations equip it with interchangeable abrasive discs for spot‑grinding rivet heads and spot‑welds on chassis sub‑assemblies. The grinder’s compact, pneumatic design allows it to operate safely in confined bays where electric tools would generate sparks, making it ideal for spot‑cleaning high‑alloy steel components in the power‑train section. In the paint shop, the same grinder prepares interior panel surfaces by lightly abrading primer layers, ensuring adhesion of subsequent clear coats. Because the tool draws power from the plant’s compressed‑air network, it can be quickly swapped between stations without downtime for battery changes or cable management. A secondary but related use appears in heavy‑equipment manufacturing, where the grinder is employed for on‑site refurbishment of engine blocks, providing the same rapid material removal without introducing electrical hazards. This flexibility keeps the line moving and maintains surface quality throughout vehicle assembly.