Injection Mold Design
& Tooling
Better Molds. Better Parts. Built for Production.
Texas Injection Molding designs and builds injection molds that support reliable production, consistent part quality, and long-term manufacturing performance. With internal tooling capability in Houston, trusted mold-building partners around the globe, and a basic mold flow analysis plus full DFM review included on every design, we help customers get the mold right before steel is cut.
Molds That Exceed Requirements — Without Exceeding Budgets
Every mold design includes a mold flow analysis and DFM review
Every Mold Type Your Program Needs
From fast prototype tools to large-format production molds — experience across the full spectrum of injection mold design and build
Low Volume Prototype Molds: Typically built in mild tool steels like P20 — fast, economical tools for validation and early production.
Mid Volume Production Molds: Built in harder tool steels such as HHP20 — a durable option for mid-range production volumes.
High Volume Production Molds: Tool steels such as H13, stainless steel, or S7 selected for cycle life, wear resistance, and dimensional stability in demanding production programs.
Stack Molds and Cube Molds: High-efficiency tooling options for production programs that need increased output, better press utilization, and lower part cost at scale.
Hot Runner Valve Gate Molds: Precision gate control for cosmetic surfaces, balanced family molds, and minimal material waste.
Overmolding Tools: Traditional overmolding of both plastics and metals — molds engineered for bond strength and process reliability.
Analyzed Before It's Built. Reviewed Before It's Quoted.
A mold built on guesswork is a gamble with your program budget. Ours are engineered — and the analysis comes standard.
Mold Flow Analysis on Every Design: Fill patterns, gate locations, weld lines, and air traps examined before steel is cut — catching at the design stage what would cost weeks in production.
Full DFM Review by Experienced Staff: Part design and tooling concept reviewed together — manufacturability improvements identified while they are still free to make.
Steel Matched to Volume: P20, HHP20, H13, Stainless, S7 — tool steel selected for your actual production profile, protecting both budget and tool life.
Global Build Network, Local Accountability: Top-quality molds built within weeks through our global partners — managed, validated, and supported by our Houston team.
Why the Flow Analysis Comes First
A mold flow analysis takes time at the design stage, but the problems it catches can be far more expensive when discovered during sampling or production. Short shots, weld lines across critical features, poor gate placement, trapped air, and warpage risk can all affect part quality, cycle time, and launch timing.
We include a basic flow analysis with every mold design because it helps identify risk before steel is cut. That is better for the customer, better for the tool, and better for the production team that will be responsible for running the mold.
The Right Steel Is a Budget Decision
A high-volume program running on the wrong steel can wear out its tool too early. A short validation run built with excessive tool steel can spend money where the program will never recover it. Matching tool steel to real production volume is one of the most important cost and performance decisions in the tooling process.
Our tooling engineers make that decision deliberately. Prototype tools, mid-volume tools, and long-running production molds each require different tradeoffs, and we explain those tradeoffs before the tooling path is selected.
Why Choose Texas Injection Molding?
Tooling engineered for your program’s economics — with the analysis included, the lead times compressed, and the molding partner attached.
Cost-Effective Tooling Strategy
Internal Houston capability plus vetted global build partners allow us to choose the right path for each tool based on your program requirements, timeline, and budget.
Built for Production
The mold is designed for more than the drawing. It is designed for filling, cooling, ejection, maintenance, repeatability, and reliable production in the press.
Analysis Included, Always
Basic mold flow analysis and full DFM review on every design — helping identify manufacturability and tooling risks before steel is cut, not after the first bad sample.
The Molder Builds the Mold
The team responsible for running the tool is involved in designing and validating it. That means processing knowledge, maintenance planning, and production accountability are built into the mold from the start.
From P20 Prototypes to High-Tonnage Production Tools
Few tooling sources span the full range: fast prototype molds in mild steel, hot runner valve gate systems for cosmetic parts, stack molds, overmolding tools for plastics and metals, and large tonnage molds up to 40,000 lbs for 1,650-ton presses. Texas Injection Molding has designed and built them all — and stands behind every one with in-house maintenance, repair, and modification capability in Houston.
Send us your part files. Our tooling engineers will run the flow analysis, complete the DFM review, and return a tooling quote that meets your budget — typically within 48 hours.
Get Your Free Engineering & DFM Review
Send us your design files or project brief. Our plastics engineers will evaluate manufacturability, flag cost and regulatory risks, and return a detailed assessment with your quote — typically within 48 hours, free and without obligation.
Get In Touch
Call us
Monday – Friday, 8am – 5pm CT
Email us
We’ll respond within 24 hours
Visit us
Houston, TX 77034
Visit www.texasinjectionmolding.com to learn more about our capabilities.