Which tools should not be etched?

Beryllium-copper tools should not be etched because etching can remove the protective coatings and alter the properties of the metal. Beryllium-copper is a high-performance alloy known for its excellent electrical conductivity and strength, which can be compromised by the etching process. This is particularly important in applications where the tool's physical and electrical properties must be maintained, as any degradation could affect the performance and safety of the tool.

Aluminum tools, copper tools, and plastic tools may withstand etching processes, as they respond differently to chemical treatments. However, beryllium-copper tools are more sensitive due to the presence of beryllium, which is a toxic element that requires careful handling. Hence, to maintain tool integrity and user safety, it is critical to avoid etching beryllium-copper tools.