It operates an in‑house tool room using CNC to build stainless steel molds.
Their molds are designed for long life, high volume, and tight tolerances, with no maintenance/repair charges while the tool is running under their operation.
The molds use stainless steel mold bases and cavities to ensure durability.
They build tools to support complex geometries, varying wall thickness, and aim for optimized cycle times.
For tooling cost and design, factors such as core/cavity machining, number of cavities, mold base, and part complexity drive tool investment.
It provides plastic tooling as an integrated service with injection molding, meaning they design and build the molds themselves.
Their tooling design includes Design for Manufacturability (DFM), early involvement in design, and mold flow analysis to optimize the mold.
Tooling technology capabilities include grinding, drilling, use of CMM (coordinate measuring machines) and optical inspection in their metrology lab. They use advanced CAD/CAM (Unigraphics NX) and Mold Flow simulation.
They aim for dimensional accuracy within 0.01 mm in their tooling and molds.
Their tooling supports a wide resin range (PP, ABS, PC, engineering plastics like PEEK) to suit different part materials.
It has a strong foundation in mold/tool design, offering tooling in materials such as steel, aluminum, graphite, and silicone.
They support multiple mold types: single cavity, multi-cavity, cold runner, hot runner, insert molding, overmolding, unscrewing molds, and cavity inserts.
Their tool room uses modern CNC, EDM, mills, grinders, lathes, drills to build molds.
Mold build lead time is typically 4–12 weeks, depending on complexity, though rapid mold building is possible in special cases.
They also offer tool transfer (relocating existing molds), which is part of their tooling-related services.
Because it integrates mold design and mold building with their injection molding operations, they can oversee tool performance and adjustments.
Metro Custom Plastics has been incorporated in the State of Texas since 1972. During the past 50 years we have honed our skills in the injection plastics industry. We are diligent in the pursuit of continual improvement of quality products that meets, or exceeds, our customer's expectations.
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