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Custom Rotational Molding Project with SPI

If you are looking for a reliable and experienced custom rotational molding company, look no further than SPI. With decades of experience in the industry, SPI is committed to providing its clients with the highest quality rotational molding services. By utilizing the latest technology and innovative methods, SPI can produce custom rotational molding products that meet the specific needs of its customers. Whether you need a single prototype or a large production run, SPI has the expertise to do the job efficiently and cost-effectively.

Why SPI for Your Custom Rotational Molding Project?

Product Design

From Concept to Completion

At SPI, we believe that technical design support is crucial for delivering high-quality products that meet the unique requirements of our clients. We understand that each project is different and therefore requires a tailored approach to achieve the desired result.

Our product development team consists of highly qualified professionals who are dedicated to taking your concept and turning it into a finished product. We use the latest technologies and keep ourselves updated with market trends to ensure our clients receive the best possible service.

We take pride in our process of taking a project from “Concept to Completion,” and we make sure our clients are involved, informed, and onboard throughout the entire process. Our step-by-step approach ensures that everything is in line with our client’s expectations and goals. We collaborate closely with our clients and seek their feedback at every step to make sure that we’re on the right track.

Our staff pays attention to even the minutest details and ensures that the final product meets our client’s requirements. We understand that the success of our clients is tied to our success, and that’s why we strive to exceed expectations every time.


At our company, design is an essential part of the product development process. With CAD, we can provide our customers and mold makers with an accurate and detailed 3D perspective of the product, which allows them to visualize the final product before it is even made.

Our team of experienced designers uses the latest CAD software to produce high-quality color renderings or line drawings of the product. The software allows them to manipulate every aspect of the design, including the size, shape, and texture, to produce a lifelike quality to your concept.

Using CAD also enables our team to make any necessary modifications to the design with ease, and they can quickly create multiple versions for customers to choose from. This streamlines the design process, saving time and money while ensuring the final product meets the customer’s requirements.

When combined with our extensive knowledge of materials and manufacturing processes, CAD technology is an invaluable tool that enables us to deliver high-quality products to our customers exactly to their specifications. So, whether you are looking to create a new product or just need to update an existing one, our design team is here to provide you with the best possible service.

Product Development

At SPI, we understand the importance of staying ahead of the game and constantly innovating. That’s why we take product development very seriously. Our product development team is always working on creating new and exciting products that meet the needs and expectations of our customers.

Innovation is the driving force behind everything we do. It allows us to continue pushing boundaries, exploring new frontiers, and expanding our offerings. Our team of talented professionals specializes in bringing fresh, innovative approaches to the product development process, resulting in unique and cutting-edge products that stand out in the market.

Diversification is another key aspect of our success. We believe that to remain competitive and relevant in today’s market, it’s important to offer a diverse range of products that meet the needs of a wide range of customers. Our product development team works tirelessly to diversify our offerings and introduce new product lines that span a variety of categories. Ultimately, our mission is to create products that not only meet the needs of our customers but exceed their expectations. We take great pride in our work and can’t wait to see what new and exciting products we can bring to the market next.

Tooling and Prototypes


Tooling and prototypes are key to your custom design project. SPI provides you options from start to finish.

  • cost-effective tooling options
  • innovative design
  • mold maintenance options
  • tooling, prototypes, and production parts delivered timely


  • bushing, inserts, core pins
  • cast-aluminum
  • CNC tooling
  • fabricated aluminum
  • molded-in inserts
  • multiple cavities
  • textured surfaces


Take a Look At Our Project Gallery

Secondary Processes

Once your part has been rotationally molded, there are a large variety of Secondary Operations that occur. For example, parting lines can be trimmed, and to achieve shine, your part can be flame polished. Rotational molded parts can be drilled, milled, sawed, or spin welded, and cooling jigs or fixtures may be used.

SPI also offers pre-assembly of custom sized orders. The below photograph demonstrates a custom order with pre-assembly of a Starglide slide.

Great slide, great fun!


Quality assurance is critical in ensuring secondary processes are carried out and completed with the highest level of expertise and precision.

Our secondary processes are completed in-house at SPI, for efficient service that is equally cost-effective for our clients.

Available Secondary Processes


  • Assembly
  • Barcoding availability
  • CNC Machining
  • Custom Packaging
  • Drilling
  • Flame Polishing
  • Just-in-Time Delivery System
  • Mold Maintenance
  • Molded-in Graphics
  • Molded-in Threaded Inserts
  • Polyurethane Foam Insulation
  • Welding

If you are seeking a reliable, experienced custom rotational molding company, look no further than SPI. We have decades of experience in the industry and can provide state-of-the-art services to meet your specific needs. Our combination of innovative methods and the latest technology allows us to deliver custom rotational molding products that are both cost-effective and efficient. Whether it is for a single prototype or a large production run, SPI is here to help. To find out more about how we can assist with your project, contact us today!


Contact Us For More Information

Contact SPI Plastics