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Small and Midsize Part Injection Molding
Precision at the Smallest Scale. Scalability Without Limits.
PSI specializes in small and midsize part injection molding — producing complex, tight-tolerance components across a broad range of thermoplastics with the consistency and cost efficiency that high-volume programs demand.
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110+
presses on the floor
80
Cavities Supported
Zero
tolerance for error

Core Capabilties

Small parts. No margin for error.

Small parts demand the highest level of accuracy — no margin for error, no shortcuts in process control. PSI brings engineered rigor to every aspect of part production, from tooling design through final inspection.

Design Precision & Part Complexity
Complex and intricate geometries
Capable of producing highly complex part shapes including undercuts, thin walls, fine features, and multi-surface geometries that simpler processes can't hold reliably.
Close tolerance holding
Engineered molds and controlled process parameters allow PSI to maintain close tolerances on small, intricate parts — shot after shot, run after run.
Dimensional consistency at volume
In-process monitoring and SPC-driven controls ensure consistent dimensional accuracy across large production volumes — not just on first article.
Materials & Performance Flexibility
Wide thermoplastic and resin range
PSI processes a broad range of thermoplastics and engineered resins — matched to your application's specific performance requirements before a tool is ever cut.
Consistent material handling
Careful monitoring and validated drying, blending, and feed processes deliver consistent melt properties throughout high-volume production runs.
Automation-ready processes
Once a process is established and validated, full automation is available — reducing cycle times, minimizing human variability, and improving output consistency.
Scalability, Cost & Sustainability
Multi-cavity mold production
Multiple parts produced simultaneously using multi-cavity tooling — maximizing throughput and driving down cost per part at production volumes.
Scale from thousands to millions
PSI supports programs across the full volume spectrum — from initial production runs through high-volume supply, without changing suppliers as you grow.
Minimal material waste
Injection molding generates virtually no material waste at steady state — runners and scrap are routinely recycled, supporting both cost efficiency and sustainability goals.
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Not sure which process is right?

For small and midsize parts, injection molding is almost always the right answer.
For small and midsize parts — where the priority is tight tolerances, fast cycle times, multi-cavity efficiency, and low cost per part — conventional injection molding delivers on all of it. If you're not sure whether your program is an exception, talk to our engineering team.
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The PSI Difference

Partnership From Day One

From the first design conversation to final assembly, our team works alongside your team at every stage. Engineering, molding, decoration, and assembly all happen under one roof, with a single team accountable for quality, timing, and consistency from start to finish.

No handoffs to outside vendors. No gaps in communication. Just experienced people who know your part, understand your standards, and are invested in getting it right.

Less guesswork.

No surprises.

Better Outcomes.

PSI asks questions before  a tool is cut — what does this part need to do, where does it live, what can’t it fail at? Our engineers work alongside yours from day one, so the people building your parts are in lock step with the people who designed them. Good engineering shouldn’t feel complicated. It should just feel like it works.

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Mold Transfer capabilities

Already have tooling? Transferring to PSI is easier than you think.

PSI has a proven process for qualifying and transitioning molds from other suppliers — minimizing disruption to your program while improving the quality, service, and cost structure of your molded parts. Whether you’re reshoring, consolidating suppliers, or simply looking for a better partner, we make the move straightforward.

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