Which statement best describes machine finishing directions?

Which statement best describes machine finishing directions?

• A. Finishing is typically done in two directions; finishing in one direction creates waves.
• B. Finishing is always done in a single direction.
• C. Finishing is done without forming waves.
• D. Direction has no impact on surface quality.

Answer: (A)

Finishing direction matters for the surface texture and flatness. The best practice is to run the machine in two directions, typically perpendicular, because the cross-direction passes help cancel out ridges left by the first pass and minimize waviness. This creates a smoother, more uniform surface. Finishing in just one direction tends to leave visible wave-like patterns and ridges due to the way the trowels drag and compact the mix. Saying direction doesn’t affect surface quality is incorrect, and claiming finishing is always in one direction or that it never forms waves doesn’t match how practical finishing work behaves.

Finishing direction matters for the surface texture and flatness. The best practice is to run the machine in two directions, typically perpendicular, because the cross-direction passes help cancel out ridges left by the first pass and minimize waviness. This creates a smoother, more uniform surface. Finishing in just one direction tends to leave visible wave-like patterns and ridges due to the way the trowels drag and compact the mix. Saying direction doesn’t affect surface quality is incorrect, and claiming finishing is always in one direction or that it never forms waves doesn’t match how practical finishing work behaves.