Engineering Support
Everything starts here. We work directly with your engineers on a durable design that integrates with the tooling and process you already run.
From concept to production.
Infinity Plastic Solutions delivers precision injection molding and the value-added services around it — insert and over molding, part and mold design, prototyping, and production tooling. Forty-plus years across every range of part and industry.
40+ yrs
Combined experience
One team
Design through production
Insert & over molding
Part & mold design
Production tooling
Marjo date tags
Customers Served
Customer service is our priority.
East Jordan
Iron Works
Waupaca
Foundry
Metal Tech
Casting
Novocast
Foundry
Buck
Company
Capabilities
Five ways we get your part into production.
Custom Injection Molding
Precision injection molding for specialized plastic components across automotive, industrial, agriculture, and consumer goods.
Part Design
Collaborative engineering that turns your concept into a production-ready component — optimized for manufacturability, durability, and cost.
Rapid Prototyping
Validate fit, function, and performance before production. Fast-turnaround prototypes cut development time and costly tooling revisions.
Tooling
Cold runner to hot runner, pneumatic, sequential valve gating — and prototype tooling through to production tooling, built around maximum efficiency for your part.
Value-Added Assemblies
Assembly, insert placement, and finishing handled here alongside the molding, so the part leaves ready for your line instead of routed to another supplier.
Not sure which one you need?
Send us the component and the volume. We'll tell you what it takes.
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Why Infinity
Plymouth, Michigan — molding floor
Engineered for how your line actually runs.
Plymouth, Michigan — molding floor
Precision you can repeat
Tight tolerances and consistent shot-to-shot results, validated before the run leaves the floor.
One partner, design to production
Part design, mold design, tooling, and molding handled by the same team, from concept to production.
Tooling built for efficiency
Cold runner to hot runner, pneumatic, sequential valve gating — prototype tooling through production tooling, specified for your cycle rather than a template.
Insert and over molding in-house
Multi-material and encapsulated components without shipping the part to a second supplier.
Prototypes before commitments
Prove fit and function on a real part before a cavity is cut or a schedule is promised.
Value-added assemblies
Assembly, insert placement, and finishing handled in-house alongside the molding — one supplier from concept through a finished component.
Get started
Send us the component. We'll handle the rest.
Tell us the application and the annual volume. We come back with a part design, a lead time, and a price.
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Process
How we help.
Three steps from the first call to parts on your dock — with the same two people on the phone at every one of them.
Most jobs start with a print or a sample and a rough annual volume. From there we handle the part design, the tooling, and the delivery schedule — so you aren't managing a supplier, you're just getting parts.
Talk to the shopUnderstand your requirements
We review the component, the application, and the volume — then recommend the process and the tooling that fit your line.
Design the right product
We design the part and the mold around manufacturability, and prototype it first if the geometry needs proving.
Deliver reliable performance
Production parts arrive on the schedule you set, with the value-added services handled here instead of at a third vendor.