Precision CNC Machining Services

Quickly transform designs into high-precision parts. Whether for prototype samples or low-volume production, we ensure tight tolerances and superior surface finishes to meet the custom needs of various industries. Request a quote today!

  • Fast delivery

  • High precision ±0.01mm

  • Flexible customization

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Innovative Companies We Support

Blue Origin logo representing a client for whom HorizonRP provided precision manufacturing and custom engineering solutions.
John Deere logo representing a client for whom HorizonRP provided precision manufacturing and custom engineering solutions.
Medtronic logo representing a client for whom HorizonRP provided precision manufacturing and custom engineering solutions.
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CNC precision machined parts with as-machined finish, providing tight tolerances and high dimensional accuracy

We’re not only the fastest provider of CNC machining prototypes, but also the most reliable partner for on-demand part production.

Why does this matter?

From concept validation to full-scale production, you only need one trusted supplier to support every stage of your product development.

How do we make it possible?

Beyond prototyping, we offer complete production support. Our expert team, together with a trusted manufacturing partner network, delivers significant economies of scale and competitive advantages. On-demand production keeps costs under control while giving you the flexibility to build inventory as needed. Whether it’s small-batch runs or high-volume production of up to millions of end-use parts, we adapt to your requirements with speed and reliability.

Why Choose to Work with Horizon?

With a network of over 50 trusted partners, we can seamlessly support everything from rapid prototyping and small-batch trials to full-scale mass production.

1.Lower Unit Cost

Unit cost decreases with higher volumes.

2.Lead Time

Shipped in as little as 5 days.

3.Quantity

Flexible customization, from 1 to 10,000 units.

4.Finishing Options

including electroplating, anodizing, and beyond.

Horizon advantages of Precision Machining?

Precision Machining for Complex Parts

When it comes to machining complex parts, higher-level technical requirements often come into play. To ensure your parts meet your exact design intent, we request that you provide 2D engineering drawings or additional technical documentation. Our experienced engineers will review your designs and provide professional feedback to optimize manufacturability and performance.

Tight Tolerance Control – Compliant with ISO 2768-f, with feature tolerances as precise as ±0.002 in (0.0508 mm)

Certified Quality Systems – CoC, FAI, ISO 9001 certifications available

Fully Machined Features – No excess material left behind, ensuring exact geometries

Note: All CNC machined parts are manufactured to meet ISO 2768 standards. Metal parts follow ISO 2768-m (medium) or ISO 2768-f (fine) requirements; plastic parts follow ISO 2768-m (medium). Ultra-precision tolerances down to ±0.0004 in (0.010 mm) are possible but must be clearly specified in your 2D drawings.

Horizon precision machining advantages illustration, showing high-quality CNC machining, custom metal parts, and advanced manufacturing capabilities.

 

How to Work With Us

Our ordering process

Types of Precision Machining That We Offer

Precision CNC Milling

We utilize high-precision multi-axis milling machines (including imported equipment from the US, Japan, and Germany along with top-tier Chinese brands) to ensure CNC-machined parts meet the following accuracy standards:

Standard Tolerance: ±0.05 mm
Critical Dimension Tolerance: ±0.005 mm
Industry Application Expertise

Our team possesses extensive expertise in manufacturing precision components for the world’s most demanding sectors, including aerospace and medical devices.

Precision CNC milling of transparent acrylic (PMMA) part with high optical clarity and smooth surface finish.

Precision CNC Turning

When absolute precision is non-negotiable, CNC turning is the solution you can trust. Equipped with professional-grade CNC lathes and backed by a team of seasoned engineers, we deliver flawless machining of rotating workpieces—perfect for high-accuracy circular and tubular components.

While CNC milling is often the go-to for small parts, CNC turning truly shines when producing larger components with an outer diameter exceeding 2.5 inches. From small-batch runs to intricate, high-complexity designs, we consistently achieve exceptional quality with uncompromising accuracy.

Choose us, and make every part a benchmark for precision and excellence.

Precision CNC turning metal part, showing high-accuracy lathe machining, smooth surface finish, and advanced metal manufacturing process.

Mirror EDM Service

Mirror EDM is a special machining technology that removes conductive material through pulse discharge, enabling the workpiece surface to achieve extremely high smoothness (Ra ≤ 0.1 μm). Its core feature is the ability to directly produce a mirror-like finish on complex profiles or high-hardness materials. It is commonly used in fields with extremely high requirements for surface quality and precision, such as precision molds, optical components, and aerospace parts.

Mirror EDM process on metal part, showing ultra-smooth surface finish, precision electrical discharge machining, and high-accuracy manufacturing.

Precision Grinding

Horizon is also equipped with high-precision grinding machines for metal parts and prototypes with stringent tolerance requirements. Grinding is a machining process that uses high-speed rotating abrasive tools to cut the surface of a workpiece, removing excess material to achieve high-accuracy dimensions, shapes, and surface quality. It is commonly used in fields such as aerospace components and precision instruments. Horizon’s professional team will tailor the optimal grinding solution for your needs.

Precision grinding process on metal component, showing high-accuracy surface finishing, CNC machining, and advanced manufacturing techniques.

Quality Assurance

Driven by excellence, we embed quality into every detail—from advanced tools to rigorous standards. We ensure consistent, outstanding quality.
1Advanced Inspection Equipment
We employ professional inspection equipment for precise measurement and validation. A spectrometer analyzes metal composition, a 2.5D measuring instrument verifies detailed features, a coordinate measuring machine (CMM) inspects complex three-dimensional structures, and height gauges ensure the accuracy of fundamental dimensions.
2Strict quality management system
From first article inspection to in-process checks and final pre-shipment testing, every stage is governed by a rigorous management system to ensure consistent quality.
IQC(Incoming Quality Control)FAI (First Article Inspection)
IPQC(In-Process Quality Control)CMM inspection report
FQC(Final Quality Control)DIR(Dimensional Inspection Report )
OQC(Outgoing Quality Control)CAR(Corrective and Preventive Action Report)
Material CertificatesISO 9001
  • Horizon quality control equipment used for precise inspection and measurement of manufactured components
  • Horizon precision machining advantages illustration, showing high-quality CNC machining, custom metal parts, and advanced manufacturing capabilities.
  • Handheld spectrometer material analysis for precise identification of metal and plastic materials in manufacturing quality control

CNC Machining Materials

Metal

  • Inconel

    Inconel Superalloy Materials

    Inconel Superalloy Materials
  • Magnesium

    Magnesium & Magnesium Alloy Materials

    Magnesium & Magnesium Alloy Materials
  • Titanium

    Titanium

    Titanium aerospace structural part CNC machined for aircraft and space applications
  • Low-Carbon Steel

    Low-Carbon (Mild) Steel Material

    Low-carbon (mild) steel sheet showcasing precision machining and metal fabrication capabilities
  • Stainless Steel

    Stainless Steel Material & Alloys

    stainless steel material
  • Copper

    Copper Material & Copper Alloys

    Copper wire demonstrating high electrical conductivity
  • Brass

    Brass Material & Brass Alloys

    Brass rod and sheet samples
  • Aluminum

    Aluminum Material & Aluminum Alloys

    Aluminum alloy sheet and rods samples

Plastic

  • PC+ABS

    PC/ABS (Polycarbonate‑ABS Blend) Plastic Material

    PC+ABS is a blend-modified material that combines the advantages of both materials. It not only inherits the high impact resistance of PC but also the material strength of ABS, while improving its heat resistance. It is often used in electronic product casings, automotive interiors, consumer products, and more.

    PC/ABS plastic pellets for prototyping and molding
  • CPVC

    CPVC (Chlorinated Polyvinyl Chloride) Plastic Material

    CPVC (Chlorinated Polyvinyl Chloride) is a modified form of PVC, with enhanced thermal stability, mechanical properties, and chemical resistance. These upgraded characteristics make CPVC an excellent choice for applications in high-temperature and corrosive environments where ordinary PVC would fail.

    CPVC plastic material offering excellent heat and corrosion resistance for industrial and plumbing applications
  • PC+GF

    PC+GF(Glass‑Fiber Reinforced Polycarbonate) Material

    PC+GF (polycarbonate + glass fiber reinforced composite material) is a reinforced engineering plastic made by adding glass fiber (abbreviated as GF) to a polycarbonate (PC) matrix. The addition of glass fiber can significantly improve the mechanical properties and stability of pure PC while retaining some of PC’s excellent inherent properties, making it suitable for scenarios with high requirements for strength, rigidity, and dimensional accuracy. It features high strength, high rigidity, and heat resistance, and is ideal for automotive parts, electrical enclosures, and structural components.

    PC GF glass-fiber reinforced polycarbonate pellets
  • PEI

    PEI (Polyetherimide) Engineering Material

    PEI (polyetherimide) is a high-performance thermoplastic known for excellent heat resistance, mechanical strength, and chemical stability. It is widely used in demanding applications across aerospace, electronics, medical, and industrial fields.

    PEI polyetherimide engineering plastic pellets
  • PTFE

    PTFE

    Polytetrafluoroethylene (PTFE), commonly known as Teflon, is a high-performance fluoropolymer. It is frequently used in mechanical components requiring reduced friction and wear—such as bearings, gears, and piston rings—due to its non-stick properties, low friction characteristics, and self-lubricating capabilities. PTFE also exhibits excellent electrical insulation properties, making it highly suitable for applications like high-frequency cables, high-voltage insulators, and electronic components.

    Additionally, PTFE maintains stable performance during long-term use across an extreme temperature range from -200°C (ultra-low temperature) to 260°C (high temperature), enabling its use in harsh environments such as aerospace systems, deep-sea equipment, and high-temperature industrial apparatus.

    PTFE(Polytetrafluoroethylene) plastic material with excellent chemical resistance and low friction for precision machined components
  • LDPE

    LDPE

    Low-Density Polyethylene (LDPE) is lighter than water, soft and tough, with excellent acid and alkali resistance as well as electrical insulation properties. It is widely used in fields such as packaging, agriculture, electronics, and daily necessities.

    LDPE plastic material with excellent flexibility and chemical resistance for injection molding and packaging applications.
  • PP

    PP (Polypropylene) Engineering Material

    Polypropylene (PP) is a well-balanced thermoplastic characterized by lightweight material, excellent chemical resistance, and good flexibility. Owing to these properties, it finds wide application in fields such as packaging, household appliances, automotive, daily necessities, and medical devices.

    PP injection molding plastic material — durable, chemical-resistant polypropylene for precision-molded components.
  • PET

    PET

    PET (polyethylene terephthalate) is a common thermoplastic polyester with excellent mechanical properties and strong chemical resistance. It also offers glass-like transparency and luster, with a high light transmittance of about 88–92%, and is widely used in beverage bottles, food packaging, and engineering plastics.

    Transparent PET plastic material sheet used for durable and lightweight molded parts.
  • PVC

    PVC (Polyvinyl Chloride) Plastic Material

    Polyvinyl chloride (PVC) is a widely used thermoplastic polymer material characterized by excellent mechanical properties, outstanding corrosion resistance, and superior electrical insulation performance. By incorporating various additives, it can be tailored to meet customized requirements. Owing to its unique combination of properties, PVC finds extensive applications in fields such as construction, industry, packaging, and healthcare.

    PVC resin pellets for industrial applications
  • PC

    PC (Polycarbonate) Engineering Material

    PC (polycarbonate) is a versatile engineering plastic known for its high impact resistance, optical transparency, and good thermal stability. It combines toughness, heat resistance, and aesthetic clarity, making it suitable for a wide array of applications.

    PC polycarbonate resin pellets
  • PMMA (Acrylic)

    PMMA (Acrylic) Engineering Material

    Acrylic (also known as polymethyl methacrylate, PMMA) boasts not only excellent optical performance but also outstanding UV resistance. With a light transmittance of up to 92%—comparable to glass—it has become a popular material in scenarios ranging from neon signs in shopping malls and display case panels in museums to precision optical lenses and stage light covers.

    Clear PMMA acrylic sheet for optical applications
  • PEEK

    PEEK (Polyetheretherketone) Engineering Material

    PEEK (polyetheretherketone) is a premium thermoplastic widely recognized for its exceptional thermal stability, mechanical strength, chemical resistance, dimensional stability, and in many cases biocompatibility and electrical insulation. It is used in extreme environments like aerospace, medical implants, electronics, and semiconductor industries.

    PEEK polyetheretherketone resin pellets
  • Nylon

    Nylon (Polyamide) Engineering Material

    Nylon (polyamide) is a versatile engineering thermoplastic known for its high strength, excellent wear resistance, good chemical stability, and toughness. It is widely used across industries for gears, bearings, bushings, automotive components, industrial parts, and more.

    Its ease of machining, coupled with its chemical resistance, also makes it suitable for applications in the automotive, aerospace, and medical industries. With its remarkable combination of properties, nylon stands out as a versatile and reliable material for a diverse range of CNC machining applications.

    Nylon polyamide resin pellets
  • POM

    POM (Polyoxymethylene / Acetal) Engineering Material

    POM (polyoxymethylene), also known as acetal, is a high‑performance engineering thermoplastic valued for its rigidity, low friction, excellent wear resistance, and good dimensional stability. It is often used in precision mechanical parts that require durable, low‑maintenance performance.

    POM acetal resin pellets
  • HIPS

    HIPS (High Impact Polystyrene) Material

    HIPS, or High Impact Polystyrene, is a modified polystyrene polymer enhanced with rubber modifiers (usually polybutadiene) to improve toughness and durability. The result is a rigid yet impact-resistant thermoplastic that retains good processability, making it popular in prototyping, manufacturing, and consumer products.

    HIPS combines the stiffness of polystyrene with improved impact performance, offering a cost-effective balance of mechanical and processing properties.

    High-impact polystyrene (HIPS) plastic material used for durable and cost-effective injection molded parts
  • HDPE

    HDPE (High-Density Polyethylene) Material

    High-Density Polyethylene (HDPE) is a thermoplastic polymer with high strength-to-density ratio, known for durability, chemical resistance, and ease of processing. As a semi-crystalline plastic, it offers excellent impact performance, low moisture uptake, and good machinability — making it a popular choice in industrial, chemical, packaging, and structural applications. It is great for applications such as orthotic and prosthetic devices, water storage, and tanks.

    Machining HDPE component with CNC
  • ABS

    ABS (Acrylonitrile Butadiene Styrene) Material

    ABS (Acrylonitrile Butadiene Styrene) is a widely used engineering thermoplastic known for its excellent balance of strength, toughness, and processability. Because it combines rigidity from acrylonitrile and styrene with impact resistance from butadiene, ABS is commonly used in consumer products, enclosures, housings, and structural components.

    Machined ABS part on CNC

Surface Finish and Post-Processing Options

Custom CNC machined aluminum container showing surface finish details

As machined

The machined or deburring finish is the standard finish where unwanted attach chips are removed with deburring tools, and sharp edges are chamfered to smooth the surface (3.2 μm).

Sandblasted surface finish on metal part showing uniform matte texture and improved surface adhesion.

Bead Blasted

Bead blasting produces a matte texture, removing all the marks of machining tools. It applies to ABS, Aluminum, Brass, Stainless Steel, and Steel parts.

Anodized surface finish on aluminum part showing durable oxide layer, enhanced corrosion resistance, and decorative appearance.

Anodizing

Anodizing involves adding an aluminum oxide coating to aluminum and its alloys. The layers, which come in various colors, increase strength and shield the surface from corrosion.

Alodine surface finish on aluminum part showing chromate conversion coating for corrosion resistance and enhanced paint adhesion.

Alodine

Provides excellent corrosion resistance property to the aluminum parts with greenish-gold color. It is the low-cost and quick surface finishing approach.

Metal part with polished surface finish, showing smooth, reflective texture, precision manufacturing, and high-quality finish.

Polishing

Physical rubbing of a metal surface to create a shiny surface is called a polishing surface finish. It increases the reflectivity and does not affect the dimensional stability of parts.

Metal part with brushed surface finish, showing uniform texture, enhanced aesthetics, and precision finishing.

Brushing

Brushing is achieved by applying an abrasive brush to the metal surface, which produces a unidirectional satin finish. And it is not recommended for highly corrosive materials.

Aluminum alloy sheet and rods samples

Sanding

Provides a random, non-linear texture with a shiny, high gloss finish. However, it might be unable to create sharp corners and pockets

Metal parts with black-oxide surface finish, showing corrosion resistance, matte appearance, and precision manufacturing.

Black-Oxide

Black oxide finish reduces surface reflectivity and offers mild corrosion protection. It involves adding a thin layer of magnetite to the surface.

Sheet metal fabricated part with surface finish, showing precision manufacturing, custom metal forming, and advanced surface treatment.

Electroplating

Electroplating increases the hardness of the steel &aluminum parts. It offers excellent corrosion, wears, and abrasion resistance.

CNC machined metal part with chrome plating finish for high hardness, corrosion protection, and mirror-like surface appearance.

Electroless Nickel Plating

A thin layer of Nickel is created on the surface from a nickel-containing solution without electrolysis. Electro-less nickel plating provides a shiny appearance, excellent hardness, abrasive, wear, and corrosion-resistance to the substrate material.

CNC machined metal part with chrome plating finish for high hardness, corrosion protection, and mirror-like surface appearance.

Chrome Plating

Chrome plating is widely used in various industries, which not only enhances the beautiful appearance of the product, but also improves the performance of the product, such as corrosion resistance, oxidation resistance, abrasion resistance, hardness, etc.

CNC machined metal part with passivation finish for corrosion resistance and improved stainless steel protection.

Passivation

Enhance the appearance and functionality of the parts. After Passivation, parts of Steel and its alloys become super resistive from corrosion.

Customer Reviews

precision machining FAQs

Precision CNC machining is a process that uses computer numerical control (CNC) machines to manufacture parts, achieving extremely high dimensional accuracy and tolerance control.
This process is widely used in fields that demand stringent precision, such as aerospace, medical devices, and electronics.
When you need to produce large quantities of parts with consistent dimensions and strict specifications, precision CNC machining is the ideal choice.
Compared with traditional manual machining, it not only offers higher precision but also provides greater production efficiency and better cost-effectiveness.

There is no minimum. Whether you need a single prototype, small-batch, or large-volume production, our team is always ready to provide professional support. Feel free to contact us to discuss your project requirements in detail!

Precision machining is suitable for a wide range of materials, including aluminum, brass, copper, steel, titanium, as well as high-performance rigid plastics such as PPS and PEEK. Contact us to learn more about the available material options and applications for precision machining.

In part design, overly tight tolerances are often unnecessary and can significantly increase manufacturing costs. If ±0.05mm is sufficient, choosing a ±0.01mm tolerance could multiply expenses. Only when ±0.01mm high precision is truly required can precision machining deliver its unmatched advantages, ensuring every part is accurate and consistent, providing reliable assurance for your project.

Precision machining is specifically designed to achieve extremely high accuracy and tight tolerances, with capabilities reaching ±0.0005 inches. This level of precision is critical for producing highly consistent parts, especially in industries such as aerospace and medical devices, where exactness is paramount. With the help of advanced CNC machines, precision machining can reliably produce components that meet strict specifications, ensuring every part is accurate and flawless.

Simply prepare detailed information about your part or assembly, including CAD drawings, material specifications, and the required quantity. Be sure to specify the machining tolerances and any additional post-processing requirements (such as surface treatment or heat treatment). Once you upload your design files, you can quickly receive an accurate quote, enabling your project to start efficiently and giving you full control over costs!

We are equipped with high-quality equipment, capable of precision CNC milling, turning, precision electrical discharge machining (EDM), and various other precision machining processes. Our workshops feature air conditioning systems that precisely control temperature, ensuring a stable environment. Additionally, our engineering team possesses both extensive experience and professional qualifications, and conducts strict verification of equipment and processes. Even in the most demanding machining scenarios, we can ensure that product quality remains consistently stable and reliable.

Put your parts into production today

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