Common Mistakes to Avoid in Plastic Product Design
- Tim Holt

- Aug 14
- 2 min read

Designing a plastic product is an exciting process, but without careful planning, small missteps can lead to costly delays, reduced product quality, and missed opportunities. At MGM Plastics, we’ve worked with countless clients in plastic fabrication San Diego and beyond, and we’ve seen firsthand how avoiding common mistakes can save both time and money. Whether you’re working with plastic fabricators for the first time or refining an existing design, here are key pitfalls to steer clear of.
1. Overcomplicating the Design
One of the biggest mistakes in plastic product design is adding unnecessary complexity. While it may be tempting to include intricate details or multiple components, each extra element can increase production costs and the likelihood of manufacturing errors. Experienced plastic fabricators can often suggest ways to simplify the design while maintaining functionality and aesthetics.
2. Ignoring Material Properties
Not all plastics are created equal. Choosing the wrong material can compromise the product’s durability, safety, and overall performance. For example, some plastics offer superior heat resistance, while others excel in flexibility or impact strength. In some cases, fiberglass fabrication may be a better choice for added strength and longevity. Working closely with your fabrication team ensures you select the best material for the product’s intended use and environment.
3. Overlooking Tolerances and Manufacturing Limitations
Precision is key in plastic fabrication, but every manufacturing process has its limits. If tolerances are too tight or shapes are too complex, production may require costly adjustments or specialized tooling. By collaborating with plastic fabricators early in the design phase, you can align your product specifications with realistic manufacturing capabilities—avoiding expensive redesigns later.
4. Neglecting Prototyping
Skipping the prototyping stage is one of the fastest ways to run into problems. Prototypes allow you to test the product’s functionality, ergonomics, and visual appeal before committing to full-scale production. This is especially important in plastic fabrication San Diego projects, where custom parts often need to fit precisely with other components. A physical model can reveal issues that may not be obvious in digital renderings.
5. Forgetting About End-Use Conditions
Your product’s environment should drive many design decisions. Will it be exposed to UV light, high temperatures, or harsh chemicals? Will it need to withstand heavy impact or constant wear? If these conditions aren’t factored in from the start, you risk premature product failure. For certain demanding applications, integrating fiberglass fabrication into the design can provide the durability needed for long-term performance.
Partner with the Experts
Avoiding these common mistakes comes down to one thing: working with an experienced team that understands the full scope of design, materials, and manufacturing. At MGM Plastics, our decades of expertise in plastic fabrication San Diego projects mean we can guide you from concept to completion, helping you make informed choices at every stage.
Whether you need custom parts, specialized enclosures, or durable components through fiberglass fabrication, our skilled team is here to ensure your product is designed right the first time, saving you time, money, and stress.
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