What is the main distinction between a positive mold and a negative mold?

The distinction between a positive mold and a negative mold primarily lies in their shapes and how they influence the final casting outcome. A positive mold has a convex shape, meaning it protrudes outward, which allows it to form a solid object that reflects the exact dimensions of the original pattern used to create the mold. This convex design captures the fine details of the surface it is intended to replicate, ensuring that the resulting cast matches the original item closely.

In contrast, a negative mold is characterized by its concave shape, where the mold surface dips inward. This is useful for creating hollow parts and offers a different method of capturing designs, often leading to more complex forms. While both types of molds are essential in manufacturing processes, the specific shapes determine the nature of the cast produced, making the understanding of their differences fundamental in mold design and application.