The round-bottom sharp knife features a curved blade tip with smooth, seamless carving, ideal for processing curved surfaces, arc lines, and relief work. During use, employ shallow layer-by-layer carving to avoid deep cuts and blade breakage. The small-radius blade tip excels in fine-textured detailing, while the large-radius blade tip smooths large surfaces. When working with solid wood, acrylic, or PVC, maintaining uniform feed speed ensures smooth curved surfaces without steps, eliminating the need for repeated polishing. Suitable for arc outlining, shallow relief, rounded lettering refinement, and curved root clearing, it produces softer transitions compared to flat-bottom sharp knives. Properly matching feed speed enhances product quality, reduces burr and trimming work, and demonstrates strong practicality.