Vacuum Casting is a highly efficient and cost-effective technique employed in rapid prototyping to create precise polyurethane prototype parts, particularly in small batches of up to 20 pieces.
It involves the use of a master mold crafted from an SLA (Stereolithography) master model, which is then filled with resin within a vacuum chamber.
This process ensures bubble-free castings, yielding accurate and functional plastic prototypes with intricate details that faithfully replicate patterns, dimensions, profiles, and textures.
While slightly slower than standalone SLA methods, Vacuum Casting offers the advantage of producing parts with varying flexibility and rigidity, along with a diverse array of colors and materials, including transparent components.
It serves as a versatile solution for swiftly generating prototypes with exceptional fidelity and design intricacy.
Its principle is to inject liquid polyurethane material into the prepared mold in a vacuum environment, and then cure it under certain temperature and time conditions.
In a vacuum state, air bubbles and gases can be effectively removed to ensure the quality and compactness of the polyurethane prototype. This manufacturing method is often used to make precision parts, models and prototypes with high precision and surface quality.
The prototype is the initial sample of a certain product, and rapid prototyping means making samples quickly. In different stages of product development, for different products, the purpose of making samples is different. In general, there are three kinds of…