What is the best material for repairing fine cracks in plaster walls?

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Spackle is the most suitable material for repairing fine cracks in plaster walls because it is specifically designed for this type of application. It is a lightweight material that can be easily applied to small defects and dries quickly, allowing for smooth sanding and finishing. Spackle adheres well to the surface and can be painted over once it has dried, seamlessly blending in with the surrounding area.

While other materials, such as joint compound, caulk, and putty may have their uses in different areas of repair work, they are not ideally suited for fine cracks in plaster. Joint compound is typically used for larger patching jobs or drywall applications, while caulk is designed mainly for sealing joints and gaps in areas subject to movement or moisture. Putty is often used for filling in larger holes or gaps rather than fine cracks, which makes spackle the optimal choice for this specific task.

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