Design For Micro Molding (Dfmm) — Engineering Success At The Micron Level

Brett Saddoris, Technical Marketing Manager, Accumold

While Design for Manufacturing (DfM) is a standard practice in product development, micro-scale parts require a more specialized approach: Design for Micro Molding (DfMM). At Accumold, decades of experience show that success at this scale isn’t just about advanced equipment or skilled technicians — it starts with early, collaborative, and thoughtful design.

DfMM redefines traditional design rules. At the micro level, minor shifts in gate placement, draft angles, or ejector pin location can make a part un-moldable. Material selection, too, is complex — standard datasheets don’t reflect performance in micro applications. That’s why engaging a micro molding expert early is vital. Accumold’s team acts as consultants, guiding design teams from CAD to final part, often transforming “un-moldable” concepts into viable products with strategic adjustments.

Beyond geometry and materials, DfMM addresses tooling, measurement, and production process planning. Micro tools require ultra-precise engineering, and part validation often demands specialized metrology. Designing for measurement is as critical as designing for moldability. Furthermore, process stability — down to injection velocity and melt temperature — affects part quality, especially in high volumes.

Accumold’s vertically integrated approach — with design, tooling, molding, metrology, and automation experts all under one roof — ensures seamless scalability and quality control. Their ability to scale from single-cavity prototyping to multi-cavity production molds while maintaining micron-level tolerances sets them apart.

For OEMs developing micro-molded products, DfMM is not optional — it’s foundational. And choosing a partner like Accumold, committed to collaboration and excellence, is key to long-term success.