Custom Injection Molding
Custom injection molding has been a core competency at Ames Industries since our founding. Today, we operate two dedicated molding facilities totaling over 40,000 square feet of manufacturing space, fully equipped with a diverse array of high-performance injection molding systems.
Our press fleet supports a wide range of tonnages and shot capacities, enabling us to process an extensive selection of thermoplastic resins—from general-purpose materials to high-performance, engineering-grade polymers. This flexibility allows us to meet demanding specifications across industries including automotive, defense, medical, consumer, and industrial applications.
We offer comprehensive molding capabilities, including conventional injection molding, insert molding, precision overmolding, and micro-scale component production. Each project benefits from our deep process knowledge, robust quality systems, and engineering-driven approach—ensuring optimal part performance, cost-efficiency, and production scalability.
Our Machine Capabilities
Ames Industries operates a fleet of 37 injection molding machines ranging from 17 to 265 tons of clamping force, supporting shot sizes from 0.37 oz to 21.29 oz. This range allows us to accommodate a broad spectrum of part geometries and material requirements across various industries.
Seven of our presses are equipped with in-mold cavity pressure monitoring systems, enabling real-time process control and improved part quality through enhanced insight into fill dynamics and material flow. The majority of our machines are integrated with gravimetric blenders and full 3-axis servo robotics for automated loading, unloading, and part handling—ensuring consistency, cycle time reduction, and labor efficiency.
We also specialize in high-efficiency overmolding, leveraging precision robotics and thermal management strategies to reduce insert load times and maximize throughput, even in complex multi-material or insert-molded configurations.
Overmolding
Overmolding presents unique engineering challenges that require precise process control and deep material understanding. Variations in thermal expansion coefficients, differential shrinkage, insert registration tolerances, and interface adhesion all influence the success of an overmolded component.
At Ames Industries, we bring advanced overmolding expertise to every project, managing variables such as insert preheating, gate design optimization, and tool alignment with tight tolerances to ensure robust part performance and dimensional integrity. Whether overmolding onto metal substrates, thermoplastic components, electrical connectors, or threaded inserts, we apply application-specific methodologies to mitigate risk and achieve repeatable results.
Our overmolding solutions serve a wide range of industries—including automotive, medical, defense, and electronics—enabling complex assemblies with integrated functionality, enhanced ergonomics, and improved structural reliability.
Materials
Ames Industries has extensive expertise in processing a broad spectrum of thermoplastic materials, ranging from high-volume commodity resins to performance-grade engineered polymers. Our material capabilities include, but are not limited to, polyolefins, styrenics, nylons, acetals, polycarbonates, polyetherimides, and high-temperature blends.
We recognize that each polymer exhibits unique rheological, thermal, and shrinkage characteristics during injection molding. Our engineering team leverages deep material science knowledge and empirical processing data to tailor molding parameters, optimize part performance, and implement targeted quality control protocols.
This disciplined, material-specific approach enables rapid root cause identification and corrective action—minimizing downtime and ensuring consistent, specification-compliant output across every production run.
Scientific Molding
Ames Industries employs scientific injection molding to achieve highly repeatable, precision-driven manufacturing outcomes. This method separates the molding cycle into distinct, independently controlled phases—fill, pack, and hold—allowing for fine-tuned optimization of part quality and process stability.
Using real-time in-mold pressure sensing and data acquisition, our engineers develop validated process windows that reduce defects such as flash, warpage, and sink marks. This approach not only enhances dimensional consistency and mechanical performance but also accelerates startup times, reduces scrap, and supports seamless mold transfers across equipment.
Scientific injection molding is ideal for complex geometries, tight tolerances, and high-reliability applications across automotive, medical, defense, and consumer product sectors.
Ready to get started?
Ames Industries has been serving the plastics industry since 1984, specializing in customized plastic injection molding services and tooling. We offer our customers full-service solutions, from part design and development to molding and assembly. For more information on how we can serve you, or if you’re ready to request a quote, don’t hesitate to contact us today.