The manufacturing process can involve different stages, with sand casting being one of its most critical aspects. Casting involves pouring liquid material into a mould to shape it as it solidifies. The casting is then ejected or removed from the mould to be used for manufacturing equipment or machinery. The most common materials that are used in the process are concrete, epoxy, clay, plaster, and sand, and the process is conducted in a sand casting foundry, a specialized factory that is well-equipped for the job. Around 70 percent of every metal casting produced is created using the sand casting process, as it is typically cost-effective and produces durable parts.