Which bottom shape is preferred for holes?

• A. Cone-bottomed
• B. Flat-bottomed
• C. V-bottomed
• D. Rounded-bottom

Answer: (A)

The main idea is how bottom geometry affects complete draining and ease of cleaning. A cone-bottomed shape narrows toward the outlet, creating a direct, gravity-driven path for contents to flow out. This design minimizes areas where material can cling, settle, or dry in place, helping with near-full drainage and easier cleaning. Flat bottoms leave a flat area where material can accumulate and be hard to remove; a V-bottom has a pointed base but can trap material along the corners and may cause clogging; rounded bottoms reduce sharp corners but still leave curved pockets that can hold residues. The cone bottom combines a smooth, unobstructed exit with minimal dead zones, making it the best choice for holes that need to drain efficiently.