When drilling advanced composites laminate, why should a drill bushing and guide be used?

Using a drill bushing and guide when drilling advanced composite laminates is crucial for preventing wobble during the drilling process. Advanced composites are often layered materials that can be sensitive to stress and misalignment. A drill bushing fits over the drill bit, helping ensuring that the bit maintains a straight path as it penetrates the laminate. This alignment minimizes the risk of drill bit wobbling, which can lead to inconsistent hole sizes and potential damage to the laminate layers.

Preventing wobble is particularly important for maintaining the integrity of the composite structure and ensuring precise fit for fasteners or other components that will be installed in the drilled holes. If wobble occurs, it could compromise the overall performance and durability of the composite material, leading to potential failures or weaknesses in the structure.