The creation of inverse forms from a positive object, specifically for additive manufacturing, involves digitally generating a cavity or mold that mirrors the original shape. As an example, consider a solid cube; the negative would be a hollow cuboid of matching dimensions, designed to receive the original cube. The process allows for the creation of molds, custom containers, or intricate internal geometries within 3D printed objects.
This technique is valuable for producing multi-part molds for casting materials like resin or plaster, enabling the replication of complex shapes that are difficult or impossible to achieve with direct 3D printing. Furthermore, it permits the creation of customized packaging solutions, or intricate internal structures, that offer advantages in weight reduction, material usage, or functional design. The underlying principle has roots in traditional mold-making techniques, which have evolved with the advent of digital design and additive manufacturing technologies.