What material should be used to clean the composite piece before drilling?

In the context of cleaning a composite component before drilling, gauze is a suitable choice due to its characteristics. Gauze is typically used because it is non-abrasive and has a loose weave that allows for effective cleaning without leaving lint or residue on the composite surface. This is crucial for maintaining the integrity of the composite material since abrasive cleaners or items can damage the delicate surface texture or create micro-abrasions that compromise the component's structural properties.

Other cleaning materials such as paper towels and rags can sometimes leave lint or fibers, which may not be ideal for pristine surfaces needed for drilling operations. Solvents are often utilized to remove oils, adhesives, or other contaminants, but using solvents alone without a proper cleaning technique could also lead to residue if not thoroughly wiped with a suitable material like gauze afterward. Thus, gauze represents an optimal choice when preparing composite surfaces for drilling, ensuring cleanliness and protection of the composite material's integrity.