Welcome to NUBS Plastics, Inc.

Nubs Plasticsinc
Contact Us: +1 760-598-2525
Email Us: sales@nubsplastics.com

Competencies

Mold Making

Plastic Mold Maker Specializing in Injection Mold Making

Mold making is an integral part of the plastic injection molding process. We have an in-house mold manufacturing facility that we take great pride in. This helps us serve as a one-stop solution for your project.

We also have relationships with some elite tool makers overseas. This enables us to provide a high-quality, cost-effective alternative to the high cost of molds built in the USA.

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High-Quality Plastic Injection Mold Making Services

A properly designed mold is crucial for smooth production and high quality parts. If the mold is not designed properly, the final product will never come out as intended. Plastic mold making is the foundation of everything that follows, not just another step in production.

At NUBS Plastics, the focus stays on building molds that actually work in real production. The team looks at part design, material flow, cooling, and long-term use. Small details matter here. A slight change in the mold can improve output, reduce waste, and save time later.

As a plastic mold maker, the goal is simple. Build molds that last, run smoothly, and produce consistent parts without constant repair.

How Plastic Mold Making Works: Step-by-Step Process

Plastic injection mold making follows a clear process. Each step builds on the last. Skipping details here usually leads to problems later.

01

Design and Planning

Plastic injection mold making follows a clear process. Each step builds on the last. Skipping details here usually leads to problems later.

02

Material Selection for the Mold

Steel or aluminum is chosen based on the project. High-volume production and projects utilizing abrasive materials such as PC or glass filled compounds usually necessitate stronger steel molds.

03

Mold Machining

The mold is cut and shaped using CNC machines. The cavities and cores are made using both CNC milling and EDM machining. Once cutting is complete the cores and cavities are polished to achieve the desired surface finish.

04

Assembly and Fitting

All mold components are put together. This includes cores, cavities, ejection and support plates.

05

Testing and Sampling

Once finished, the mold is tested and sample parts are made. Adjustments are made if needed.

06

Final Production Use

Once approved, the mold is used for regular production runs.

Why Choose NUBS Plastics as Your Plastic Mold Maker

Choosing a reputable company for plastic injection mold making​ is not just about cost. It’s about how the mold performs after delivery.

At NUBS Plastics, the focus stays on long-term results. Our team does not cut corners. Design checks, flow analysis, and testing are taken seriously. This reduces potential for issues during production.

Communication is key. Clients are made aware of any potential issues during the plastic mold making design process.

Our many years of experience allow us to know what works and what doesn't.

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Product

Materials for Expert Plastic Injection Mold Making

Material choice affects everything. Strength, finish, durability, and even cost depend on it.

In plastic injection molding, both the mold material and the plastic used for parts require attention.

Common mold materials include:
  • Hardened steel for long production runs
  • Pre-hardened steel for moderate use
  • Aluminum for prototypes or short runs

Steel molds last longer. They handle pressure better. Aluminum molds are faster to make but wear out sooner.

On the plastic side, different materials behave differently during molding.

Common plastics used:
  • ABS for strong and durable parts
  • Polypropylene for flexibility
  • Polycarbonate for impact resistance
  • Nylon for strength and wear resistance

Each material flows differently inside the mold. Cooling time also changes. That’s why a plastic mold maker must plan the mold based on the material being used.

A mismatch here can cause defects like warping or shrinkage. Getting this right saves time and cost later.

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Whether you need help with the application process or anything else in between, our professionals are ready to assist you.

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Frequently Asked Questions About Plastic Injection Mold Making

High-quality molds typically take 8-104–8 weeks to produce, depending on design complexity and precision requirements.

With proper maintenance, injection molds can last hundreds of thousands of cycles, ensuring smooth operation and long-term reliability.

Most molds take around 4 to 8 weeks. The time depends on the design complexity and the precision requirements. Simple molds are quicker. Detailed molds take longer.