Mask molding in the USA refers to the process of creating masks using various materials and techniques. Here are some examples of mask molding in the USA:

1. Plaster casting: Creating molds from plaster to produce masks for theater, film, or Halloween.
2. Latex molding: Using liquid latex to create flexible, wearable masks.
3. Resin casting: Casting masks with polyurethane or epoxy resins for durability and detail.
4. 3D printing: Creating masks with 3D printing technology for precise and intricate designs.
5. Vacuum forming: Shaping plastic sheets into masks using heat and vacuum machines.
6. Slip casting: Creating ceramic masks using liquid clay and molds.
7. Papier-mâché: Crafting masks from paper pulp and glue for a more traditional approach.