From concept to finished part, Hill Plastics delivers precision-engineered custom fabricated assemblies built to exact specifications. Serving OEM manufacturers, aerospace, medical, and industrial sectors across the U.S., our 45+ years of expertise, advanced CNC equipment, and 20,000 sq ft facility ensure every assembly meets your tightest tolerances—on time and on budget.
From precision CNC trimming to full assembly, we deliver custom plastic fabrication solutions for any industry or quantity.
Our skilled fabrication department produces custom enclosures, POP displays, industrial parts, and OEM components using advanced CNC routers, punch presses, and SolidWorks-driven design—trimmed and finished to your exact drawing specifications.
Using two 5'x10' CNC trimming centers, we perform primary and secondary trim operations for precision drilling, contour cutting, edge finishing, and assembly-ready part production with repeatable dimensional accuracy.
Eight thermoforming machines ranging from 2'x3' to 5'x9' handle custom vacuum forming, heavy gauge thermoforming, and drape forming across ABS, HDPE, PETG, KYDEX, and more for both short runs and high-volume orders.
We engineer custom molds from low-cost wood and polyurethane for prototypes to precision aluminum production tooling, including CNC-trimmed fixtures, drill fixtures, threaded inserts, and full product development support.
Rapid prototypes are produced from low-cost wood or polyurethane tooling to exact print specifications—ideal for design review or functional evaluation—with master patterns typically ready in just a few weeks.
Our sales and engineering team guides you from idea to turnkey solution, evaluating cost, impact resistance, durability, chemical resistance, and environmental requirements to recommend the optimal material and tooling design.
Hill Plastics brings over 45 years of fabrication expertise to every custom assembly project. Whether you need a single prototype or thousands of production parts, our Lewisville, TX facility—serving clients across the U.S.—handles everything from SolidWorks-driven design and low-cost tooling through CNC trimming, heat bending, bonding, fastener installation, and final quality inspection. Sectors from aerospace and medical to telecommunications and industrial OEMs trust us for assemblies that perform in demanding environments.
See how Hill Plastics has delivered precision custom assemblies for leading OEMs, aerospace, and industrial clients.
"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..."
"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..."
"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..."
"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..."
"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..."
"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..."
Four decades of precision manufacturing, cutting-edge equipment, and a commitment to quality make Hill Plastics the trusted fabrication partner for industries nationwide.
Since 1977, Hill Plastics has built a reputation for high-quality custom fabricated assemblies and competitive pricing across demanding U.S. industries.
Our 20,000+ sq ft Lewisville, TX plant houses eight thermoforming machines and two 5'x10' CNC trimming centers for any production volume.
From design and tooling through fabrication, assembly, and delivery, we manage every step so you receive finished, specification-compliant parts on schedule.
Wood and polyurethane prototype tooling keeps upfront costs low, letting engineers across aerospace, medical, and industrial sectors validate designs before committing to aluminum production molds.
Experienced engineers dedicated to delivering precision custom fabrication solutions.
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.
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.
Custom fabrication is the process of designing and manufacturing parts or assemblies built specifically to a client's unique drawings, dimensions, and performance requirements—rather than using off-the-shelf components. At Hill Plastics, this includes CNC trimming, heat bending, bonding, drilling, fastener installation, and assembly operations applied to thermoformed or flat plastic sheet stock to produce finished, specification-compliant parts.
Talk to our engineering team for expert guidance and a free project consultation.
Hill Plastics ships precision custom fabricated assemblies and solutions to clients across the United States from our Lewisville, TX facility.
Nationwide
Service Coverage
Lewisville, TX
Headquarters
Since 1977
In Business
We fulfill custom fabrication orders for clients across the entire United States.
Serving OEM and industrial clients with precision since 1977.
Advanced CAD and CNC interface capability for precision fabrication.
Consistently rated 5 stars by engineers and purchasing professionals.
Tell us about your project requirements and our engineering team will respond with expert recommendations, material guidance, and a competitive quote tailored to your specifications.
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.
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.