Benefits of plastic machining

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By Chris Passanante | Nov 06, 2019
Plastic machining at GMN Plastics

While plastic injection molding remains the cornerstone of GMN Plastics, plastic machining is one of the many complementary capabilities offered to our customers. With a dedicated area and automated equipment for machining, GMN Plastics can machine parts up to 20”x40” in size. But how does plastic machining benefit our customers? Plastic machining is ideal for secondary machining of injection molded parts. For parts that need to be modified to create a unique part number or multiple from a host molded part, machining is a cost-effective solution to minimize the cost of the tool.

Some of the core advantages of plastic machining include –

  • Lowered cost – Depending on the order quantity, utilizing machining over a tool can result in significant cost savings. For instance, machining can eliminate the need for tooling in lower volume projects, thereby reducing non-recurring engineering (NRE) costs. 
  • Quality control – Machining provides with greater control over part quality and production process. By eliminating the need to sub-contract machining and performing it in in-house, machining has allowed GMN Plastics to reduce paperwork and handling charges.
  • Fine trimming and de-gating – Most plastic parts, especially from highly regulated industries such as medical and aerospace, require a smooth finish. Machining can be used to remove the gate from an injection molded part, making the surface smooth and gate-free.
  • Taping holes – Machining offers the ability for holes to be taped rather than using an unscrewing tool. While it’s not only cost-effective for lower volumes, it also allows for better control of threads and holes.

There are several factors to consider while deciding between tool and machining. While machining may eliminate the tooling cost, it increases the price per part. So, depending on the volume, tooling may be more affordable. But if you need to change an existing part, secondary machining may be the process of choice.

Currently, GMN Plastics serves customers in nearly every industry with its machining capabilities. To determine if this is a good fit for your next project, request a consultation with our plastic experts.