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Custom CNC Machining Services: Machining, Turning, Milling, and Routing
Ucodo provides a custom online CNC machining service to engineers, product developers, designers, and more through our vetted network of 100+ chinese suppliers. Our highly qualified and certified machine shops can make any custom design, simple or complex. We offer rapid machining, small-batch machining, and high-volume production, with all orders serviced by Ucodo from end to end. Upload a CAD file to the Ucodo Instant Quoting Engine@Ucodo.com to get a price, lead time, and design-for-manufacturability feedback on your custom CNC parts. Our fast CNC machining capabilities include services for metals and plastics and flexible production and shipping options to meet you at the perfect price and product development stage. Your price for CNC-machined prototypes includes tariffs and shipping for standard parcels.
CNC Machining Tolerances
Maximum Part Size：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.
Standard Lead Time：3 business days.
General Tolerances：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”.
Precision Tolerances：Ucodo can manufacture and inspect to tight tolerances, including sub +/- 0.001" tolerances, per your drawing specifications and GD&T callouts.
Minimum Feature Size：0.020” (0.50 mm). This may vary depending on part geometry and chosen material.
Threads and Tapped Holes：Ucodo can accommodate any standard thread size. We can also machine custom threads; these will require a manual quote review.
Edge Condition：Sharp edges are broken and deburred by default.
Surface Finish：The standard finish is as-machined: 125 Ra or better. Additional finishing options can be specified when getting a quote.
Metal CNC Machining Materials
CNC Machining Aluminum Alloys: Aluminum 6061 / Aluminum 5052 /
Aluminum 2024 / Aluminum 6063 / Aluminum 7050 / Aluminum 7075
Aluminum MIC-6 / ADC12.
CNC Machining Copper Alloys: Copper 101 / Copper C110
CNC Machining Bronze Alloys: Copper C932
CNC Machining Brass Alloys: Copper 260 / Copper 360
CNC Machining Stainless Steel Alloys: Nitronic 60 (218 SS) / Stainless Steel 15-5 / Stainless Steel 17-4 / Stainless Steel 18-8 / Stainless Steel 303 / Stainless Steel 316/316L / Stainless Steel 416 / Stainless Steel 410 / Stainless Steel 420 / Stainless Steel 440C
CNC Machining Steel Alloys: Steel 1018 / Steel 1215 / Steel 4130 / Steel 4140 Steel 4140PH / Steel 4340 / A2 Tool Steel / O1 Tool Steel
CNC Machining Titanium Alloys: Titanium (Grade 2) / Titanium (Grade 5)
CNC Machining Zinc Alloys: Zinc Alloy
Custom: We can source additional alloys and tempers from within our network of 1,000 custom machine shops. If you do not see the material stock you are looking for, please choose "Custom" under the material drop-down in the Ucodo Instant Quoting Engine@Ucodo.com. You can then submit your quote for manual review and our expert manufacturing team will reach out.
Plastic CNC Machining Materials
ABS: High-strength engineering plastic used for many commercial products.
Acrylic: A clear glass-like plastic. Good wear and tear properties. Great for outdoor use.
Delrin (Acetal): Acetal / Delrin 150 / Delrin 100
Garolite: Garolite G10 (FR4) / Garolite G10 (non-FR) / Garolite G11 (FR5) Constructed of an epoxy resin with fiberglass fabric reinforcement, also called epoxy-grade industrial laminate and phenolic, this material offers high strength and low moisture absorption.
HDPE: High-density polyethylene is a moisture and chemical-resistant plastic with good impact strength. The material is outstanding for outdoor applications as well as watertight containers or seals.
Nylon 6/6: Offers increased mechanical strength, rigidity, good stability under heat and/or chemical resistance.
PC (Polycarbonate): With almost twice the tensile strength of ABS, polycarbonate has superior mechanical and structural properties. Used widely in automotive, aerospace, and other applications that require durability and stability.
PEEK : PEEK / PEEK (USP Class VI TECAPEEK) / PEEK GF30 Offering excellent tensile strength, PEEK is often used as a lightweight substitute for metal parts in high-temperature, high-stress applications. PEEK resists chemicals, wear, and moisture.
Polypropylene: Has excellent electrical properties and little or no moisture absorption. It carries light loads for a long period in widely varying temperatures. It can be machined into parts requiring chemical or corrosion resistance.
PTFE (Teflon): This material surpasses most plastics when it comes to chemical resistance and performance in extreme temperatures. It resists most solvents and is an excellent electrical insulator.
UHMW PE: Ultra-high molecular weight polyethylene. A general-purpose material. It offers a unique combination of wear and corrosion resistance, low surface friction, high impact strength, high chemical resistance, and does not absorb moisture.
PVC: Polyvinyl chloride (Type 1) is a highly chemical-resistant synthetic plastic, PVC is commonly in environments exposed to liquids or requires electrical insulation.
ULTEM: ULTEM 9085 / ULTEM 1000 / ULTEM 2300 ULTEM (Polyetherimide) is a stiff, robust, performance-grade thermoplastic that can operate continuously in high-temperature environments (up to 340°F). It has one of the highest dielectric strengths of commercially available thermoplastics, making it an excellent electric insulator. Since ULTEM is also resistant to chemicals, easily cleaned, and does not absorb moisture, it is often used for medical applications.
Custom CNC: We can source additional CNC plastics from within our network of 10,000 machine shops. If you do not see the material stock you are looking for, please choose "Custom" under the material drop-down in the Ucodo Instant Quoting Engine@ucodo.com. You can then submit your quote for manual review and our expert manufacturing team will reach out.
CNC Machining Finishes
Standard (As-Milled)
The finish option with the quickest turnaround. Machined parts are left with visible tool marks and potentially sharp edges and burrs, which can be removed upon request. CNC machining surface finish is comparable to 125 uin Ra finish.
Bead Blast
The part surface is left with a smooth, matte appearance.
Tumbled
This is a batch-based process that tumbles vibrating media to remove sharp edges and burrs on CNC parts. Tumbling can remove machine marks on exterior surfaces. Parts over 8” may require a manual review.
Anodized (Type II Or Type III)
Type II (MIL-A-8625, Type II) creates a corrosion-resistant finish. Parts can be anodized in different colors—clear, black, red, and gold are most common—and are usually associated with aluminum. Type III (MIL-A-8625/MIL-PRF-8625, Type III, Class 1/2 "hardcoat") is thicker and creates a wear-resistant layer in addition to the corrosion resistance seen with Type II. See examples of our anodized finishes in our metal finishes gallery.
Titanium Anodize
A surface finish for titanium per AMS-2488 Type 2 specification. Also called Tiodize, this finish increases fatigue strength and the wear resistance of a part. Titanium anodized parts are common in aerospace and medical device manufacturing. Non-pigmented titanium anodize finishes will dull shine.
PTFE Impregnated Hard Anodize
A hard coat anodize process that embeds PTFE to create a self-lubricating, dry contact surface with Type 3 hard coat’s protective properties. This finish can be used on aluminum alloys or titanium and increases the service life of the product. This finish conforms to the AMS-2482 Type 1 Hard Coat Anodizing with Teflon (Non-Dyed).
Chem Film (Chromate Conversion Coating)
Provides corrosion resistance and good conductivity properties. Can be used as a base for paint. Can leave surface yellow/gold. Adds very little thickness, about 0.00001”-0.00004”. Chem film will conform to MIL-DTL-5541, TYPE I/II.
Passivation
Improves corrosion resistance for 200 and 300 series and precipitation hardened corrosion-resistant steels. Thickness is negligible, about 0.0000001”. Conforms to ASTM A967, AMS-QQ-P-35, MIL-STD-171, ASTM A380, or AMS 2700.
Powder Coat
This process is where powdered paint is sprayed onto a part and baked in an oven. This creates a strong, wear- and corrosion-resistant, more durable layer than standard painting methods. A wide variety of colors are available to create the desired aesthetic. See examples in our powder coating finishes gallery.
Electropolishing
An electrochemical process cleans steel parts to reduce corrosion and improve appearance, by making the metal brighter. Removes about 0.0001”-0.0025” of the metal. Conforms to ASTM B912-02.
Electroless Nickel Plating
Provides uniform nickel coating which offers protection from corrosion, oxidation, and wear on irregular surfaces. The finished part will be brighter. Thickness starts at .0001”. Conforms to MIL-C-26074.
Silver Plating
Silver offers high solderability and electrical conductivity but is susceptible to tarnish. Conforms to AMS QQ-S-365D. Thickness is about 0.00002” - 0.0003.”
Gold Plating
Gold Plating provides good corrosion and tarnish resistance with excellent solderability. Default application specification is MIL-G-45204 and ASTM B488, CLASS 00, 0, OR 1. Thickness is about 0.00002" - 0.00005."
Zinc Plating
Provides uniform zinc coating which offers protection from corrosion, oxidation, and wear on irregular surfaces. Conforms to ASTM B633-15.
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