High-Precision 3, 4, & 5-Axis CNC Machining Services

BOEN Rapid provides high-precision 3, 4, and 5-axis CNC machining services for custom metal and plastic parts, supporting engineers, product designers, and manufacturers from rapid prototyping to low-volume production. With over 17 years of manufacturing experience, we machine complex geometries, tight-tolerance features, and functional components using advanced CNC milling and turning capabilities. Our machining expertise covers aluminum, stainless steel, carbon steel, brass, copper, titanium, engineering plastics, and other materials. Whether you need a simple machined component or a complex multi-surface part, our engineering team helps optimize designs for manufacturability, select suitable materials and machining processes, and achieve the required dimensional accuracy and surface finish. From one-off prototypes to repeat production orders, BOEN Rapid delivers reliable custom CNC machined parts with responsive lead times, consistent quality, and engineering support at every stage. Upload your CAD files and drawings today to get a fast CNC machining quote and free DFM feedback.

CNC Machining Tolerances

Maximum Part Size

Standard Lead Time

General Tolerances

Precision Tolerances

Minimum Feature Size

Threads and Tapped Holes

Edge Condition

Surface Finish

Milled parts up to 80" x 48" x 24" (2,032 x 1,219 x 610 mm). Lathe parts up to 62" (1,575 mm) length and 32" (813 mm) diameter.

3 business days

Tolerances on metals will be held to +/- 0.005" (+/- 0.127 mm) in accordance with ISO 2768 unless otherwise specified. Plastics and composites will be +/- 0.010".

we can manufacture and inspect to tight tolerances, including sub +/- 0.001" tolerances, per your drawing specifications and GD&T callouts.

0.020" (0.50 mm). This may vary depending on part geometry and chosen material.

We can accommodate any standard thread size. We can also machine custom threads; these will require a manual quote review.

Sharp edges are broken and deburred by default

The standard finish is as-machined: 125 Ra or better. Additional finishing options can be specified when getting a quote.

Metal CNC Machining Materials

Aerospace & Aviation

Precision-machined aluminum, titanium, and stainless steel components for aerospace structures, brackets, housings, and mechanical assemblies. Our multi-axis CNC machining capabilities support complex geometries, tight tolerances, and demanding engineering specifications.
Medical Devices & Healthcare

Custom CNC-machined components for medical devices, diagnostic equipment, surgical instruments, and healthcare systems. We work with materials such as aluminum, stainless steel, and engineering plastics, supported by ISO 13485 quality management.
Robotics & Automation

Precision-machined parts for robotic systems, automation equipment, and motion-control assemblies. From structural frames and mounting brackets to precision housings and mechanical interfaces, we support rapid prototyping and low-volume production.
Automotive & Electric Vehicles

CNC-machined components for automotive prototypes, EV systems, testing equipment, and functional assemblies. Our capabilities support complex aluminum and steel parts, helping engineering teams validate designs and accelerate product development.
Industrial Equipment & Machinery

Custom-machined components for industrial machinery, testing systems, production equipment, and mechanical assemblies. We manufacture precision housings, fixtures, shafts, brackets, and other functional parts for prototypes and low-volume production.

Advantages and Challenges of CNC Machining

CNC milling and turning are highly accurate and repeatable processes. Tight tolerances between +/-0.001″ – 0.005″ can be achieved, depending on specifications. Machines can be programmed to reliably run for 24 hours, 7 days a week if necessary, so CNC milling is a good way of getting parts produced on demand. Using standard tooling, a CNC machining service is particularly valuable for creating one-off parts, custom CNC parts, i.e., for replacing legacy components or delivering a specialized upgrade to a customer. It is also conceivable to scale single-part production to runs exceeding 10,000 units. Depending on the unit number, size, and complexity, the turnaround for CNC machined parts can be as short as one day. With shipping and delivery, deadlines can be met within a week.

CNC Machining FAQ

What manufacturing services does BOEN Rapid provide?

BOEN Rapid provides rapid prototyping and low-volume manufacturing services for a wide range of industries. Our capabilities include CNC machining, metal and plastic 3D printing, sheet metal fabrication, vacuum casting, injection molding, die casting, and custom tooling. We support projects throughout the entire product development cycle, from early-stage prototypes to full production.

What is your typical lead time for prototype parts?

Most CNC machined and 3D printed prototype parts can be delivered within 5–10 business days. Lead time depends on factors such as part complexity, material selection, quantity, and finishing requirements. Expedited manufacturing services are also available for urgent projects.

Do you have a minimum order quantity (MOQ)?

No. BOEN Rapid does not require a minimum order quantity. Whether you need a single prototype, a small production batch, or larger manufacturing volumes, we can support your project requirements.

What materials can you manufacture?

We manufacture parts using a broad selection of engineering-grade metals and plastics. Common materials include aluminum, stainless steel, titanium, brass, copper, ABS, PC, POM, Nylon, PEEK, TPU, and PMMA. Additional materials are available for industrial, medical, aerospace, automotive, and other specialized applications.

How do you ensure part quality?

Quality is maintained through ISO-certified manufacturing processes and comprehensive quality control procedures. Our process includes in-process inspections, final dimensional verification, and full material traceability. Material certificates, inspection reports, and Certificates of Conformity (COC) are available upon request.

How can I get a quote for custom parts?

Simply upload your CAD files, technical drawings, or project requirements through our website or send them by email. Our engineering team will review your design, provide DFM (Design for Manufacturability) feedback when appropriate, and prepare a quotation. Most quotes are delivered within 24 hours.

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