CNC Machining for HDPE
Resolute Precision Manufacturing provides precision CNC machining of HDPE (High-Density Polyethylene) components for industrial and consumer applications. HDPE is available in commercial and FDA-compliant food-contact grades, offering a combination of low weight, machinability, and chemical resistance for applications where metal may be unnecessarily heavy or costly. From prototype evaluation to high-volume production, we manufacture custom HDPE components to print, with consistent quality and dependable delivery. Request a Quote Why HDPE (High-Density Polyethylene) for Precision CNC Machining
HDPE is a versatile engineering plastic used in CNC machining applications that require low weight, impact resistance, and resistance to many chemicals. Compared with metal, HDPE can offer weight and cost advantages in applications where high structural strength and heat resistance are not essential.
Its machinability makes it suitable for turning and milling a variety of component geometries, including holes, pockets, and contoured surfaces. However, HDPE’s thermal expansion and tendency to creep under sustained loads must be considered during part design and machining. Our CNC machining capabilities support the production of HDPE components for both prototypes and production runs.
Common Applications for HDPE
Chemical and corrosive fluid containment components
Food-contact components made from compliant HDPE grades
Cutting boards and food-service surfaces
Pump housings and chemical-resistant fittings
Marine and offshore equipment bushings
Industrial tank liners and wear plates
Specifications
| CNC Turning | Swiss CNC (20mm–38mm); Y-axis dual spindle lathe ideal for tight OD tolerances and threaded components |
| CNC Milling | 3, 4, and 5-axis CNC milling for complex geometries, pockets, and contoured surfaces |
| Tolerances | ±0.005″ standard; ±0.002″ achievable with secondary finishing operations |
| Surface Finish | As-machined (Ra 32 µin); polished and hand-finished surfaces available |
| Materials in Stock | Commercial and FDA-approved food-contact grades |
| Volume Capability | Prototype through production runs |
| Certifications | ISO 9001:2015 |
Industries We Serve
CNC Turning Services
CNC Milling Services
Custom Fasteners
Value-Added Services
Frequently Asked Questions
Q: What tolerances can RPM hold on hdpe (high-density polyethylene) components?
We routinely hold ±0.005″ on diameter and length. With secondary finishing (boring, grinding, or polishing), ±0.002″ is achievable. The limiting factor is material creep and thermal expansion in hdpe (high-density polyethylene), not machine capability.
Q: Can RPM machine hdpe (high-density polyethylene) with external coolant?
Yes. HDPE (High-Density Polyethylene) machines cleanly dry or with coolant. We use both approaches depending on the application. Dry machining reduces coolant disposal costs; flooded cooling improves surface finish on precision surfaces.
Q: How does hdpe (high-density polyethylene) compare to metal for this application?
Cost is typically 30—60% lower for hdpe (high-density polyethylene). Weight is 1/5th to 1/6th of steel. Chemical resistance and corrosion immunity are superior. However, hdpe (high-density polyethylene) has lower strength and stiffness, so structural applications may require metal or reinforced polymer.
Q: Can we source hdpe (high-density polyethylene) in different colors or grades?
Yes. We stock natural (unfilled) and several pigmented grades. For specialty requirements (UV-stabilized, FDA-approved, flame-retardant, or glass-filled), we can procure material and schedule production. Lead time depends on material availability.