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Thermoforming Services in Michigan | Since 1977

Hill Plastics delivers precision thermoforming and vacuum forming solutions backed by over 45 years of manufacturing expertise. From rapid prototyping with low-cost tooling to high-volume production runs, we transform your concepts into precision-formed plastic parts. With eight thermoforming machines and advanced CNC capabilities, we serve aerospace, medical, telecommunications, and industrial OEM manufacturers across Michigan and beyond with cost-effective solutions and quick turnaround times.

Industrial thermoforming machine heating plastic sheet for custom vacuum forming production

Our Thermoforming Services

From prototyping to high-volume production, we deliver precision thermoformed parts with competitive pricing and quick turnaround.

Vacuum Forming & Thermoforming

Custom vacuum and heavy gauge thermoforming using eight machines ranging from 2'x3' to 5'x9', including a high-speed 4'x7' rotary thermoformer. We process ABS, HDPE, PETG, Kydex, and specialty materials for enclosures, radomes, and OEM components with low-cost tooling and rapid prototyping capabilities.

CNC Trimming & Cutting

Precision CNC trimming and cutting services using two 5'x10' CNC centers for exact specifications. We perform primary and secondary trim operations, contour cutting, precision drilling, and edge finishing with routing machinery, punch presses, and automated equipment for repeatable production quality.

Custom Plastic Fabrication

Advanced fabrication services for custom POP displays, industrial parts, and secondary operations. Our skilled team uses CNC routers, SolidWorks design software, and expert fabrication techniques including heat bending, bonding, riveting, fastener installation, and assembly to deliver finished products to specification.

Mold Making & Tooling

Custom molds and tooling using CNC-milled wood, polyurethane, or aluminum castings. We provide low-cost wood tooling for prototypes and pre-production runs, with easy design modifications, then transition to aluminum production tooling. Services include trim fixtures, drill fixtures, and threaded insert preparation.

High Volume Production

High-volume manufacturing capabilities with our 4'x7' rotary thermoformer featuring cycle times 2.5 times faster than standard machines. With over 20,000 square feet of production space and 45 years of quality control experience, we handle runs from hundreds to thousands of parts with competitive pricing.

Design Assistance & Prototyping

Turnkey product development from concept to production. Our sales and engineering team assists with material selection, tooling design, and rapid prototyping using low-cost tooling. We evaluate impact requirements, chemical resistance, and environmental factors to ensure optimal material and design choices for your application.

Engineer reviewing CAD design on computer screen with plastic prototype parts on desk

Our Proven 5-Step Manufacturing Process

Design Review & Material Selection

Our experienced engineering team collaborates with you to understand your product requirements and application environment. We evaluate factors like impact resistance, chemical exposure, temperature tolerance, and cost constraints to recommend the optimal thermoplastic material and tooling approach for your project.

Prototype Tooling & Samples

Production Tooling Development

Thermoforming & CNC Finishing

Quality Control & Fulfillment

Proven Track Record

Trusted by Industry Leaders

For over 45 years, we've delivered precision thermoformed solutions to aerospace, telecommunications, medical device, and OEM manufacturers nationwide.

"Great value, family business, personal attention. Over the years, Cody, Brad, and Aubrey have become valued associates in my small enterprise. Willing to tackle design challenges. Get-her-done communications. Outreach to additional sources of expertise. These folks understand the inventive process. Cody for example is a Kickstarter supporter and is familiar..."

Dan Burns
Dan Burns

"Hill Plastics did a great job creating a substitute back window for my RV. I have a portable mini-split air conditioner that I use in extremely hot weather to supplement my RV’s own cooling power. The mini-split has an inside unit that blows the cold air and an outside condenser..."

Stephen Souris
Stephen Souris

"Great value, family business, personal attention. Over the years, Cody, Brad, and Aubrey have become valued associates in my small enterprise. Willing to tackle design challenges. Get-her-done communications. Outreach to additional sources of expertise. These folks understand the inventive process. Cody for example is a Kickstarter supporter and is familiar..."

Dan Burns
Dan Burns

"Hill Plastics did a great job creating a substitute back window for my RV. I have a portable mini-split air conditioner that I use in extremely hot weather to supplement my RV’s own cooling power. The mini-split has an inside unit that blows the cold air and an outside condenser..."

Stephen Souris
Stephen Souris

"Great value, family business, personal attention. Over the years, Cody, Brad, and Aubrey have become valued associates in my small enterprise. Willing to tackle design challenges. Get-her-done communications. Outreach to additional sources of expertise. These folks understand the inventive process. Cody for example is a Kickstarter supporter and is familiar..."

Dan Burns
Dan Burns

"Hill Plastics did a great job creating a substitute back window for my RV. I have a portable mini-split air conditioner that I use in extremely hot weather to supplement my RV’s own cooling power. The mini-split has an inside unit that blows the cold air and an outside condenser..."

Stephen Souris
Stephen Souris
The Hill Plastics Difference

Why Choose Hill Plastics?

Four decades of thermoforming expertise delivering cost-effective solutions from prototype to production.

45+ Years of Expertise

Since 1977, we've built a reputation for quality and precision, with staff maintaining minimum 20-year tenures as industry professionals.

Low-Cost Tooling

Our CNC-milled wood and polyurethane tooling approach delivers rapid prototypes at a fraction of traditional tooling costs, with easy design modifications throughout development.

High-Volume Capacity

Our 4'x7' rotary thermoformer runs 2.5 times faster than standard machines, supported by 20,000+ square feet of manufacturing space for efficient large-volume production with competitive pricing.

Turnkey Solutions

From initial design consultation and material selection through prototyping, tooling, production, and finishing operations—we manage your entire project with SolidWorks integration and expert engineering support.

Meet Our Engineering Team

Expert guidance in product design and materials selection.

Brad Hill, Sales & Engineering Team at Hill Plastics

Brad Hill

Sales & Engineering Team

Brad Hill brings deep expertise in plastic thermoforming design and materials engineering to every customer project. As a key member of Hill Plastics' sales and engineering team, Brad specializes in helping clients navigate the complexities of material selection—evaluating cost, impact requirements, durability, tensile strength, chemical resistance, and environmental factors to identify the optimal PS or HIPS grade for each unique application. He works closely with customers from initial concept through prototype approval, offering guidance on tooling design, process optimization, and production planning. Brad's hands-on approach ensures that every thermoformed component is engineered for performance, manufacturability, and cost-effectiveness. His commitment to collaborative problem-solving and technical precision has made him a trusted advisor to OEM manufacturers, aerospace clients, and medical device companies nationwide. With a focus on delivering turnkey solutions that meet exact specifications, Brad exemplifies Hill Plastics' dedication to quality, innovation, and customer success.

Cody Hill, Sales & Engineering Team at Hill Plastics

Cody Hill

Sales & Engineering Team

Cody Hill is a skilled plastics engineer and sales professional with a passion for transforming customer ideas into precision-manufactured reality. As part of Hill Plastics' dedicated sales and engineering team, Cody provides expert consultation on product design, material selection, and tooling strategy for custom thermoforming projects. He leverages advanced CAD tools like SolidWorks to collaborate with clients on design refinements, ensuring optimal part geometry, wall thickness distribution, and draft angles for successful vacuum forming. Cody's technical knowledge spans the full spectrum of PS and HIPS materials, enabling him to recommend the best plastic grade based on application-specific demands such as impact resistance, rigidity, clarity, and cost. From rapid prototyping using low-cost tooling to scaling up for high-volume production runs, Cody guides customers through every phase of the manufacturing process with transparency and attention to detail. His proactive communication style and commitment to delivering on-time, on-budget results have earned him the trust of clients across aerospace, telecommunications, industrial equipment, and medical device sectors.

Frequently Asked Questions

What is thermoforming and how does it work?

Thermoforming is a manufacturing process where plastic sheet material is heated to a specific forming temperature until pliable, then formed over or into a mold using vacuum pressure. Air is removed between the mold and material, drawing the heated plastic into the mold's shape. Once cooled, the formed part is trimmed to specifications using CNC equipment, routing machinery, or punch presses. This process is ideal for producing custom enclosures, radome covers, industrial components, and display fixtures in low to high volumes with significantly lower tooling costs than injection molding.

What materials can be thermoformed?

How long does it take to produce thermoformed prototypes?

What industries do you serve with thermoforming services?

What are the advantages of thermoforming over injection molding?

What is your production capacity for high-volume orders?

Do you offer secondary operations and finishing services?

What geographic areas do you serve?

Have Questions About Your Project?

Our engineering team is ready to discuss your thermoforming requirements and provide expert guidance.

Trusted Quality & Expertise

Awards and Recognition

45+ years in business badge

45+ Years in Business

Serving industries nationwide since 1977

5-star customer rating badge

5-Star Customer Rating

Consistently rated 5.0 stars by clients

Trusted by industry leaders badge

Trusted by Industry Leaders

Serving Southwest Airlines, CommScope, and more

Ready to Start Your Thermoforming Project?

Get expert guidance on material selection, tooling design, and production planning. Our team responds to all inquiries within one business day.

Contact Us Today

For immediate assistance, feel free to give us a direct call at +1 972-436-9717. You can also send us a quick email at sales@hillplastics.com.