Why Our Drilling Services Stand Out
- Precision and Accuracy
- Wide Material Compatibility
- Versatile Applications
High-Precision Plastic Fabrication & Machining Solutions
At Ronningen Research & Development, our custom fabrication and machining services are engineered to support every stage of your plastic injection molding process — from design prototypes to production tooling. With over 50 years of expertise, we deliver precision-engineered solutions that meet tight tolerances, complex geometries, and rigorous industry standards. Our in-house machining department utilizes advanced CNC, milling, and finishing technologies to produce custom parts, molds, and tooling fixtures with exceptional accuracy. Whether you require mold base modifications, prototype parts, or small-run production machining, we tailor every project to your exact material, strength, and dimensional needs. As a trusted manufacturing partner for Fortune 100 and 500 OEMs, we prioritize quality, consistency, and efficiency — ensuring your plastic components perform flawlessly in every application.
What Sets Our Custom Fabrication Services Apart
CNC milling for precision plastic components
Mold base modifications and tooling fabrication
Custom part machining for prototype builds
Tight tolerance finishing and polishing operations
Rapid turnaround on low-volume production runs
Design optimization for manufacturability efficiency
Call Us Today to Schedule a Free Consultation
Our Fabrication Techniques and Specialized Services
We combine decades of experience with modern manufacturing technology to provide a full suite of custom machining and fabrication services. Our integrated approach ensures precision, repeatability, and cost-efficiency across all production scales. From prototype tooling to production molds, we deliver results that align with your specifications and performance goals.
CNC Milling & Turning:
Our CNC machining centers deliver high-accuracy milling, turning, and drilling for plastic parts, ensuring dimensional consistency and surface quality in every batch.
Mold Fabrication & Maintenance:
We design and maintain injection molds with precision detail, extending tool life and ensuring long-term production reliability.
Prototype Part Machining:
Our rapid prototyping capabilities allow for fast, accurate fabrication of sample parts for testing, validation, and design refinement.
Custom Tooling & Fixtures:
We build custom jigs, fixtures, and gauges to improve assembly precision and streamline manufacturing operations.
Partner with Ronningen for Precision Machining Excellence
When precision matters, Ronningen Research & Development delivers unmatched results. Our custom fabrication and machining services empower manufacturers with high-quality tooling, molds, and plastic components that exceed performance standards. Let our experts transform your design into a fully optimized, production-ready solution. Contact us today to discuss your next machining or fabrication project — and experience true engineering precision.
Frequently Asked Questions About Custom Machining & Fabrication Services
Our clients often ask about our custom fabrication and machining services. Below are answers to the most common questions about our machining processes, materials, and service options, optimized for both search engines and voice assistants.
1. What types of materials do you machine?
We work with a broad selection of engineering-grade plastics including ABS, polycarbonate, nylon, acetal, and PEEK. Our material expertise ensures your components maintain dimensional stability, chemical resistance, and durability across diverse manufacturing environments.
2. Can you handle both prototype and production machining?
Yes. We specialize in both rapid prototype machining and high-volume production runs. Our flexible setups and precision tooling allow us to transition quickly between project stages while maintaining consistent quality and lead times.
3. How do you ensure machining precision and accuracy?
Each part undergoes CNC programming verification, in-process inspection, and final dimensional analysis using CMM (Coordinate Measuring Machine) technology. This multi-stage approach ensures exact tolerances and zero-defect results.
4. Do you provide tooling repair and modification services?
Absolutely. We offer complete mold and tool repair, modification, and reconditioning services to extend tooling life, reduce downtime, and maintain production quality. Our fast turnaround minimizes disruption to your manufacturing schedule.
5. Where are your fabrication and machining services available?
Ronningen Research & Development proudly serves clients across the United States, offering on-site fabrication support, tool transport logistics, and remote engineering collaboration. Our advanced infrastructure ensures efficient project delivery — no matter where your facility is located.
Our Active Certifications


Our ISO 9001 certified quality management system is registered and certified by NSF International Strategic Registrations and based on a number of quality management principles including:
- A strong customer focus
- Support of top management
- Adherence to a process approach
- Continual improvement
Under the scope of our registration are the following services:
- Prototype plastic injection tooling for molded parts
- Engineering evaluation samples
- Pilot and production plastic components
Our accreditation from NSF provides assurance to our customers that our certified components and products comply with the technical requirements of ISO 9001.
QMMY2.E116158 Fabricated Parts – Component
Underwriters Laboratories is an independent product safety testing and certification organization working for public safety since 1894. Since its founding, U/L has held the reputation as the undisputed leader in product safety and certification, giving consumers peace of mind about the products they use.
Our Comprehensive Manufacturing Services: Plastic Injection Molding & More
Assembly & Sub-Assembly
At Ronningen Research and Development, we provide expert Assembly & Sub-Assembly services for seamless integration of components. Whether it's simple assemblies or complex multi-part solutions, we ensure precision and efficiency in every process.
Custom Coloration
Our Custom Coloration services offer tailored color options to meet your design and branding needs. We use advanced Plastic Injection Molding techniques to ensure long-lasting, consistent colors for your products.
Custom Cutting Parts
Ronningen Research and Development specializes in Custom Cutting Parts using state-of-the-art machinery. We provide accurate cuts for a variety of materials, meeting the specific needs of your project.
Drilling
We offer high-precision Drilling services to create exact holes in various materials. Our advanced equipment ensures accuracy and quality for projects requiring tight tolerances and consistent results.
Electroplating
Our Electroplating services enhance part durability and corrosion resistance with high-quality metallic coatings. We provide superior finishes for applications in automotive, electronics, and more.
Heat Staking
Heat Staking at Ronningen Research and Development creates strong, reliable bonds between plastic components without the need for additional materials. This process is ideal for parts requiring secure assembly and durability.
Hot Stamping
Hot Stamping services provide a high-quality finish with precision and efficiency. We use advanced techniques to apply logos, designs, and text to parts, ensuring a clean and lasting imprint.
Insert Molding
Insert Molding allows us to mold plastic around metal or other materials to create strong, integrated components. This service provides enhanced functionality and durability for complex applications.
Labeling
We provide precise Labeling services that ensure clear, durable markings for traceability, branding, and compliance. Our labeling process guarantees that your parts are correctly identified and meet industry standards.
Leak Testing
Our Leak Testing services verify the integrity of your products, ensuring they meet safety standards. We provide airtight and watertight testing to prevent failures and guarantee quality.
Machining
We offer high-precision Machining services for custom parts. Using advanced CNC equipment, we deliver consistent, high-performance components for a variety of industries.
Milling
Our Milling services create intricate parts with high accuracy. We use advanced equipment to ensure precise cuts and finishes for your custom projects.
Over Molding
Over Molding at Ronningen Research and Development creates multi-material components for enhanced durability and functionality. We mold plastic over existing parts to meet complex design requirements.
Packaging, Custom
Our Custom Packaging services protect your products during transportation and storage. We offer tailored solutions to ensure your parts arrive safely and in excellent condition.
Pad Printing
We provide Pad Printing services for high-quality markings on various materials. Ideal for branding, labeling, and customization, our process ensures precise, durable prints.
Over Molding
Over Molding at Ronningen Research and Development creates multi-material components for enhanced durability and functionality. We mold plastic over existing parts to meet complex design requirements.
Packaging, Custom
Our Custom Packaging services protect your products during transportation and storage. We offer tailored solutions to ensure your parts arrive safely and in excellent condition.
Pad Printing
We provide Pad Printing services for high-quality markings on various materials. Ideal for branding, labeling, and customization, our process ensures precise, durable prints.
Part Marking
Our Part Marking services at Ronningen Research and Development ensure clear and accurate markings for identification and traceability. We use advanced techniques to apply markings that meet industry standards.
Painting
At Ronningen Research and Development, our Painting services enhance the aesthetic and protective qualities of your parts. We apply durable coatings for both functional and cosmetic purposes.
Silk-screening
We offer Silk-screening services at Ronningen Research and Development for durable, high-quality prints on parts. This process is ideal for logos, designs, and labels, providing precise results for a variety of materials.
Shielding
Our Shielding services at Ronningen Research and Development protect components from electromagnetic interference. We use advanced materials and techniques to ensure reliable performance and compliance with industry standards.
Shipping
At Ronningen Research and Development, we handle Shipping with care, ensuring that your products are securely packaged and delivered on time. Our reliable shipping services help you get your products to the market quickly and safely.
Spin Welding
Spin Welding services at Ronningen Research and Development provide strong, durable bonds for plastic parts. This technique is ideal for creating seamless joints without the need for additional materials.
Structural Foam Molding
We offer Structural Foam Molding at Ronningen Research and Development for lightweight, durable plastic parts. This service provides strong components with a reduced weight, ideal for applications that require high strength without the added bulk.
Taping
Our Taping services at Ronningen Research and Development are designed to provide secure adhesion and protection for your products. We offer custom taping solutions to meet the needs of various industries.
Trimming
At Ronningen Research and Development, we provide Trimming services to finish and refine your parts. Our precise trimming process ensures clean edges and perfect finishes for your molded components.
Ultrasonic Welding
Ultrasonic Welding at Ronningen Research and Development uses high-frequency sound waves to create strong, precise bonds between plastic parts. Ideal for delicate applications, this process ensures high-quality, durable results without the need for adhesives.
