True or False: A reamer is not needed to drill holes in composite materials.

The assertion that a reamer is not needed to drill holes in composite materials is false. When working with composite materials, achieving the correct hole size and ensuring a clean, accurate cut is crucial because composites can behave differently than metals. Drilling into composites can lead to delamination or fraying of the material around the hole if not done correctly.

Using a reamer after drilling helps to enlarge the hole to the desired diameter and ensures that the edges of the hole are smooth and free of defects. This is especially important because the integrity of composite structures can be compromised by poorly finished holes. A reamer allows for higher precision and better surface finish, which is vital for the assembly and bonding processes that often follow drilling.

Overall, while it might be considered optional in some circumstances, relying solely on drilling without a reamer generally does not meet the quality standards necessary for aerospace applications, especially in areas where the strength and durability of the composite material are critical.