What should be checked frequently after every fifth hole during drilling?

Frequent checks of the drill-reamer or drill bit for damage after every fifth hole during drilling is essential for maintaining the quality and integrity of the drilling operation. As the drilling process progresses, heat and friction can cause wear or damage to the cutting edges of the drill bit or reamer. A damaged bit can lead to improper hole sizes, poor surface finishes, and can even cause increased workload on the drilling machinery, potentially leading to serious equipment failure or accidents.

Regularly inspecting the cutting tool helps in identifying any issues early, preventing more significant problems down the line, and ensuring that the drilling remains efficient and accurate. Notably, a sharp, intact bit also enhances the overall productivity of the assembly operations in the aerospace field, where precision is critical.