Vacuum casting is the key technique for plastic or rubber part fabrication using a vacuum and stands out as a premier method for small batches of polyurethane products. This method is particularly valuable for the creation of samples of products so the manufacturer can assess the trend, market response, customer feedback, and product performance before working on full-scale production. Injection molding is another technique used for plastic model manufacturing, but vacuum casting is cost-effective and most suitable for small production. This article will shed light on the vacuum casting introd ...