Mold Cost and Streamlining Injection Molding Expenses

 Estimating Mold Cost and Streamlining Injection Molding Expenses

When evaluating manufacturing processes based on factors like cost and lead time, various considerations come into play. Different processes involve distinct timeframes, materials, and part design requirements. Today, we'll delve into the cost drivers associated with part design, focusing on injection molding, a process we specialize in as one of the largest mold manufacturers globally.Mold Cost

Designing for Moldability: A Lesson from Dexter

Meet Dexter, an engineer with a clever solution to consolidate a five-part housing into two parts, saving substantial tooling costs. Excited about his design, Dexter opts for 3D printing for fit/form/function testing before injection molding. However, he encounters a setback—his parts are not moldable. This scenario, a common pitfall, highlights our first major cost driver.

  1. Not Starting with the End in Mind Dexter's oversight is a prevalent challenge. Beginning with a solution rather than considering the process can lead to moldability issues. Start by designing parts for molding, ensuring they can be 3D printed afterward. This approach, unlike molding a part exclusively designed for 3D printing, avoids costly modifications to the mold.
  2. Mold Base Size The size of the mold base is our second cost driver. Understanding how mold size correlates with part features is crucial. An apparently small part might necessitate a larger mold base due to complexities like undercuts. Consider design best practices, such as pass-thru cores, to optimize space and reduce component costs.
  3. Internal Componentry Internal components significantly impact mold costs. Features like side action cams, pick-out inserts, and bolt-in inserts contribute to expenses. Each added component can increase the overall mold price, emphasizing the importance of mindful design to avoid unnecessary costs.
  4. Polish or Custom Finishing The final cost driver is the choice of polish or custom finishing. Different finishes, ranging from in-house to SPI or Mold-Tech equivalents, come with varying cost implications. Opt for in-house finishes for prototyping, reserving expensive finishes for the final mold after design confirmation.

By adhering to these insights, you'll be well-prepared for efficient production, minimizing mold costs and ensuring a smooth injection molding process.

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