U.S.-based precision injection molding / Since 1982
Complex plastic parts
Engineered for production
From demanding geometries and high-heat resins to cleanroom production and assembly, Infinity Molding & Assembly, Inc. turns difficult programs into reliable, repeatable outcomes.
Built on Quality Defined by Precision Trusted for Reliability
One accountable path
Material guidance and design-for-manufacture support reduce risk before steel is cut.
Long-standing industry participation keeps Infinity close to shared learning, workforce development, and the future of U.S. manufacturing.
The Infinity difference
Engineering, tooling & production working as one
Precision is more than a dimension. It is the handoff between engineering and tooling, the discipline behind every resin lot, and the speed of a team that can make a decision when your program needs one.
“Adding value to everything we do.”
Technical depth
Complex geometries, engineering-grade materials, scientific molding, and practical DFM guidance.
Responsive decisions
A lean, experienced team that stays close to the work and pivots quickly when requirements change.
Production confidence
Automation, traceability, preventive maintenance, and inspection systems built around repeatability.
Core capabilities
Precision molding, tooling, automation & assembly
Bring Infinity in early or bring us a program that needs a better path. Our engineering, quality, tooling, and production teams work as one system.
55–500 tons
Precision injection molding
Thirty all-electric presses support low- and high-volume programs with tight process control, repeatability, and energy-efficient operation.
ISO Class 8
Cleanroom molding & assembly
Four dedicated presses from 55 to 110 tons within a controlled medical manufacturing environment.
Before production
Engineering & DFM support
Material selection, manufacturability review, process development, and optimization align the design with a stable production strategy.
Smart automation
Robotics and inspection technologies drive efficient cycles, consistent handling, and reliable output.
On-Site Metrology
Scientific molding, documented validation, CMM and vision inspection, plus FTIR scanning on every incoming resin lot.
Tool knowledge stays close
In-house tooling
On-site preventive maintenance and tool cleaning support production molds, with maintenance records and production feedback guiding the next service.
Explore tooling supportMaterial expertise
High-heat and engineering resin molding expertise
Material behavior reaches into part geometry, tool design, process stability, inspection, and long-term performance. Infinity helps connect those decisions before they become production constraints.
- Material guidance For demanding thermal, chemical, and dimensional requirements
- High-heat processing For advanced engineering resin families
- Incoming integrity With FTIR verification on every resin lot
Polyphenylene sulfide
A high-performance engineering material suited to programs where heat, chemical exposure, and dimensional demands must be considered together.
Markets we serve
Medical, automotive, industrial & consumer manufacturing expertise
From regulated healthcare environments to demanding mobility and OEM applications, our systems flex around the requirements of the program.
Medical & healthcare
ISO 13485 systems, Class 8 molding, white-room assembly, documented validation, and traceability for quality-critical components.
Explore medical molding
Automotive
IATF 16949 rigor, robust automation, repeatable high-volume production, and rapid problem-solving for exacting requirements.
Explore automotive moldingIndustrial & Aftermarket
Flexible volumes, engineering-grade resins, and collaborative support for industrial, consumer, appliance, electrical, and emerging applications.
Explore industrial moldingConsumer
Responsive molding, assembly, and packaging support for durable products where appearance, feel, and consistent fit matter.
Explore consumer molding- Agriculture
- Appliances
- Electrical
- Telecommunications
- Consumer products
From concept to production
From DFM to validated production
Early collaboration brings material, tooling, automation, inspection, and launch requirements into focus before they become production constraints.
Every stage is connected, documented, and owned by a team that understands what the next stage needs.
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Review the challenge
Geometry, performance, resin, volume, regulatory needs, and launch expectations come into focus.
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Engineer the path
DFM, material guidance, tooling strategy, automation, and inspection planning work together.
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Design the Tool
Tool design turns DFM decisions into steel, cooling, gating, and maintenance plans built for repeatable production.
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Prove the process
Scientific molding and validation establish a controlled, repeatable operating window.
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Scale with control
Automation, inspection, traceability, and preventive maintenance protect quality and delivery.
Have a difficult geometry, a high-heat resin, or a program that needs a more responsive home?
Put our team on itProgram flexibility
Production capacity that grows with demand
Infinity supports low- and high-volume requirements, with the capacity and financial discipline to add equipment or automation when a strong business case calls for it.
- 01 Launch Right-size the process
- 02 Stabilize Prove repeatability
- 03 Automate Build efficiency
- 04 Expand Grow with demand
Low volume to sustained scale
A 30-press platform and cross-functional production planning help match capacity to the actual needs of the program.
Investment with purpose
When the opportunity supports it, Infinity can secure capital for additional equipment and fit-for-program automation.
Expansion capacity on campus
The Mount Vernon operation has room for new capabilities, supporting a longer runway for successful customer programs.
Tooling expertise close at hand
In-house maintenance and familiar regional tool shops create a responsive network around production-critical assets.
Quality systems
Certified injection molding & onsite metrology
Traceability, validation, inspection, resin verification, and cross-functional problem-solving are built into the operating culture and carried through every release.
- Scientific molding
- Repeatable process windows and documented validation
- Metrology lab
- CMM and vision systems for consistent, reliable results
- Incoming inspection
- FTIR scanning on every incoming resin lot
Recent Google reviews
What people say about Infinity
Infinity's Google Business Profile currently carries a 5.0 rating across eight public reviews. Read all Google reviews
The Indiana Manufacturers Association recognized Infinity's long-term commitment, investment, and growth in Indiana manufacturing. Infinity was established in 1982 and has been an IMA member since 1995.
Read the IMA announcement Prior recognition / 2024 Quality & Delivery AwardInfinity Molding is a wonderful company to work with. Excellent quality! The team is very responsive and great to work with!
Bonnie Collins5-star Google review
As a medical-device supply chain manager who has worked with Infinity for several years, Jason describes the experience as consistently outstanding. He highlights responsive support, dependable quality, and a first-class operation that continues to meet his organization’s needs.
Jason Boesche5-star Google review
Stephanie describes Infinity as professional, transparent, dependable, and attentive to detail. She highlights responsive communication, consistent follow-through, urgency, and a quality-focused approach, calling the team an excellent supplier and valued business partner she readily recommends.
Stephanie Toler5-star Google review
Southwest Indiana / USA
Two facilities
One US campus
Founded in Southwest Indiana
Molding, tooling, cleanroom, and metrology
Responsive domestic supply
A domestic manufacturing partner reduces offshore risk without sacrificing technical capability. Our Mount Vernon campus brings production, cleanroom molding, tooling support, metrology, and experienced decision-makers together.
- Location
- Mount Vernon, Indiana
- Cleanroom
- 11,000 sq. ft. Class 8 facility
- Metrology
- CMM & vision systems
- Mindset
- Lean, agile, accountable
Progress with less waste All-electric presses and an ISO 14001 environmental management system support responsible, efficient production.
News & Insights
What’s happening at Infinity
Facility investments, team milestones, and recognition from the manufacturing floor in Mount Vernon.
View all news
Careers
Infinity is hiring
Infinity is recruiting for several shop-floor positions at its Mount Vernon operation.
Read the updateQuality and delivery excellence
Infinity's largest customer recognized the team with its 2024 Quality and Delivery Award at an April supplier conference.
Celebrating decades of service
Infinity celebrated Henry Walker and David Puckett as they retired after 39 and 41 years of service.
New cleanroom production machine
Infinity added a new 110-ton Toyo all-electric press to its cleanroom, pairing the machine with a two-arm Yushin robot for automated production.
Start the conversation
Get a quote for your next project
Tell us where the program is today and what success needs to look like. We’ll bring engineering, quality, tooling, and production thinking to the same table.
