Which process helps reduce waste during manufacturing?

Which process helps reduce waste during manufacturing?

• A. Hand finishing all parts
• B. Welding all joints
• C. Injection mould where possible
• D. Painting every surface

Answer: (C)

Using a forming process that creates the part close to its final shape reduces waste, because less material is removed and less finishing is needed. Injection moulding for plastics forms the part directly in a mould, giving a near-net shape with minimal trimming. Any runners or sprues can often be recycled back into the process, so scrap is reused rather than wasted. This makes it efficient for high-volume production and lowers waste compared with methods that require more material removal or extensive finishing. By contrast, finishing every part by hand or painting every surface uses more material and effort, and welding joints adds filler and post-processing rather than reducing waste. So choosing injection moulding where possible best reduces waste.

Using a forming process that creates the part close to its final shape reduces waste, because less material is removed and less finishing is needed. Injection moulding for plastics forms the part directly in a mould, giving a near-net shape with minimal trimming. Any runners or sprues can often be recycled back into the process, so scrap is reused rather than wasted. This makes it efficient for high-volume production and lowers waste compared with methods that require more material removal or extensive finishing. By contrast, finishing every part by hand or painting every surface uses more material and effort, and welding joints adds filler and post-processing rather than reducing waste. So choosing injection moulding where possible best reduces waste.