Fast CNC Machining Services
Get instant quotes for CNC-machined metal/plastic parts, from prototype to mass production.
- Tolerances up to 0.001 inch are available.
- 110+ materials, including metals, plastics, ceramics, and composites.
- Over 20 surface finishes are available.
- ISO 9001:2015 certified.
- CNC machining cost :10~1000 USD/PCs
Cnc machining service for metal/plastic/ceramic parts
Equipped with 100+ CNC machines and ISO 9001 certification, we ensure consistent high quality from prototyping to mass production through extensive machining experience and strict quality control.
Weldo custom cnc milling parts
We operate a professional milling and machining facility with dedicated rooms for manual milling/turning and 3-, 4-, and 5-axis CNC milling and turning. We serve industries from medical and aerospace to 3C electronics and automotive, producing metal and plastic prototypes to customer-specified dimensions.
Weldo custom precision turning parts
Our engineers have 10+ years of production experience and select the right tooling and feed rates to machine high-hardness metals, soft metals, plastics, ceramics, and more. For symmetrical parts (round, cylindrical, square, hex, octagonal, etc.), lead times can be as fast as 1–3 days.
Comprehensive high-standard CNC machining manufacturer
Weldo, a precision machining team comprised of engineers with 15 years of hands-on experience, stands as Dongguan’s premier professional CNC machining service provider.
One-Stop Precision Machining Services
Our operators average 10+ years of experience, skilled in 3-, 4-, and 5-axis machining, with 6,000+ complex projects completed across aerospace, medical, and automotive industries. Equipped with advanced CNC and EDM systems, we deliver full-process machining from roughing to micron-level precision finishing.
CNC Machining Common Materials
WELDO provides precision CNC machining services for materials ranging from common aluminum, stainless steel, alloys, and copper to plastics such as ABS and PC etc.
Metal cnc material type:
Aluminum
It features low density and a hard texture, yet the material itself is relatively pliable. Highly corrosion-resistant, it is widely utilized in the fields of aerospace, biomimetic skeletal structures, and automotive component manufacturing.
Color : Silver.
Types : Aluminum 6061、7075、2024、5052、6063 and MIC-6.
Surface finish : Polishing, Brushing, Sandblasting, Chrome Plating, Anodizing, Electroplating, Powder Coating, Laser Etching.
Delivery time : 1-5 days.
Stainless steel
Corrosion-resistant, smooth, and easy to clean, used in kitchen, medical, construction, and automotive parts.
Color : Silver.
Types : Stainless steel 304/316/201/202/430/444/410/420/440c/2205/2507/17-4ph/17-7ph.
Surface finish : Polishing, Brushing, Sandblasting, Electroplating, Spraying, PVD (Physical Vapor Deposition), Passivation, Pickling, Coloring.
Delivery time : 2-5 days.
Copper
Possesses electrical conductivity, tensile ductility, and antimicrobial properties, primarily used for processing into crafts, decorative items, and medical equipment.
Color :Orange,yellow.
Types : copper H59/H62/Hpb59-1/C36000/HAI77-2/HSN62-1/HPb/HMn/HAl/HSn/HNi.
Surface finish : Passivation, Electroplating, Chemical Plating, Shot Peening, Sandblasting, Chemical Film Treatment, Polishing, Bright Cleaning.
Delivery time : 1-5 days.
Bronze
Bronze is a corrosion-resistant copper alloy with good fluidity and varying color by composition. It’s used for parts like bearings, gears, and marine components.
Color : gold/brown.
Types : Tin bronze, aluminum bronze, beryllium bronze, silicon bronze, manganese bronze.
Surface finish : Sandblasting, polishing, knurling, grinding, passivation, chemical film coating, impregnation coloring, brush/spray coloring, electroplating, anodizing, powder coating, brushing.
Delivery time : 1-5 days.
Steel
Iron-based alloy with Cr, Ni, and Mn, offering adjustable properties via heat treatment. Used for bolts, shafts, gears, cutting tools, and engine components.
Color : Silver .
Types : Steel S20C,S45C,S50C,SK85,SK95,40Cr,4140,4130,H13,D2,W1,A2,D2,M2,SKD11,ASP-23,S136.
Surface finish :Sandblasting, Mirror Finish, PVD Coating, Brushed Finish, Spray Coating, Electroplating.
Delivery time : 1-5 days
Magnesium
Lightweight and possesses low hardness, excellent thermal conductivity, and causes minimal tool wear. Its strength surpasses that of aluminum alloys and steel, and its damping capacity—1.5 times that of aluminum—enables it to effectively absorb vibrations and noise. Suited for use in aerospace and automotive components.
Color : Silver.
Types : Magnesium alloy AZ91D/AM60B/AM50A/AS41B/ZK60/MB8/AZ31/WE43/ZE41/LA141/LZ91.
Surface finish : Chemical conversion coating, anodizing, nickel plating, electroplating, composite coating, spray painting, powder coating, electrophoretic coating.
Delivery time : 1-5 days.
Plastic cnc material type:
ABS
Combining rigidity, toughness, and easy processing, it’s ideal for precision parts under moderate loads, such as electronic housings, automotive air ducts, and trim components.
Color : Beige,black.
Types : General-purpose, flame-retardant, heat-resistant, high-impact-resistant, transparent (MBS), filled modified, alloyed, functionalized ABS.
Surface finish :Spray coating, electroplating, screen printing, laser engraving, hot stamping, vacuum coating, transfer printing, sandblasting.
Delivery time : 1-5 days.
PVC
PVC is a robust, dense material characterized by excellent tensile strength and moderate elongation. Due to its resistance to chemical corrosion and aging, it is an ideal choice for corrosive environments.
Color : White,Beige,black.
Types : Rigid PVC and Flexible PVC.
Surface finish : Painting and plating, polishing, sanding
Delivery time : 1-5 days.
POM
High-strength, low-friction, and dimensionally stable material, ideal for machining. It replaces metal in wear parts like gears and bearings.
Color : white,black,blue,yellow,etc.
Types : POM-H, POM-C.
Surface finish : Polishing, sandblasting, chemical polishing, laser polishing, anodizing/painting.
Delivery time : 1-5 days.
PTFE
PTFE offers ultra-low friction, strong chemical resistance, and excellent insulation, ideal for seals, gaskets, and bushings.
Color : White, natural, black, filled or custom-colored.
Types : Virgin PTFE，Glass-filled PTFE，Carbon-filled PTFE，Bronze-filled PTFE，Modified PTFE
Surface finish : Machining finish, polishing, texturing, coating, engraving, anti-static treatment.
Delivery time : 1-5 days.
PMMA
92% light transmittance “plastic crystal” for lenses and light guides—lighter than glass, easy to machine, and ideal for display covers and phone frames.
Color : clear,white,black,colored.
Types : General-purpose / Impact-resistant / Heat-resistant / Pearlescent.
Surface finish : Polishing, enhanced coating, sandblasting for texture, printing for coloring, anti-scratch and anti-fingerprint treatments.
Delivery time : 1-5 days.
PC
High-performance thermoplastic with excellent toughness, rigidity, and insulation—lightweight and ideal for CNC-machined electronic components.
Color : white or black.
Types : General Machinable/Flame Retardant/Reinforced/Blended PC.
Surface finish : Polishing, Hardening, Spraying, Laser Engraving, Electroplating, Hot Stamping.
Delivery time : 1-5 days.
FR4
FR4 is a glass-fiber epoxy laminate with high strength, excellent insulation, and stable performance. It’s widely used for structural and insulating parts like spacers, brackets, and mounting plates.
Color : Yellow, green, black, white, natural
Types : Standard FR4 / High-Tg FR4 / Halogen-free FR4
Surface finish : Machining finish, polishing, sandblasting, coating, painting, laser marking
Delivery time : 1–5 days
PA
PA (Nylon) offers 62 to 85 MPa tensile strength, low friction, and heat resistance, ideal for gears and bearings in automotive, electronics, and machinery.
Color : Colored.
Types : PA6, PA66, PA6T, PA9T.
Surface finish :Mechanical grinding, acid/alkali etching, hydrolysis technology, coating.
Delivery time : 1-5 days.
PE
PE is a low-melting thermoplastic requiring temperature control during machining to avoid adhesion. It offers low friction, chemical resistance, and is widely used in sliding parts, containers, and toys.
Color : black,white,colored.
Types : LDPE, HDPE, UHMWPE, PEX, PEX-A, PEX-B.
Surface finish :Polishing, sandblasting, coating, etching.
Delivery time : 1-5 days.
PEEK
PEEK is a high-strength, high-temperature engineering plastic with low friction and excellent chemical resistance. It is widely used in aerospace components, high-heat parts, and medical devices.
Color : Beige,black.
Types : CF-PEEK, GF-PEEK, PEEK with carbon black/ceramic/PTFE/graphite fillers.
Surface finish :Sandblasting, polishing, metal coating, polymer coating.
Delivery time : 1-5 days.
PP
PP is a semi-crystalline thermoplastic with good flow, requiring temperature control during CNC machining. It’s widely used for containers, connectors, and structural parts.
Color : black,white,colored.
Types : PP-H, PP-B, PP-R, HIPP.
Surface finish :Polishing, Sandblasting, Coating.
Delivery time : 1-5 days.
HDPE
HDPE is a durable, non-toxic thermoplastic with strong impact resistance and stability, used for valves, pump parts, gears, bearings, and core materials.
Color : black,white.
Types : HI-HDPE, UV-HDPE, UHMWPE, Carbon Black-Filled HDPE.
Surface finish :Polishing, Sandblasting, Coating.
Delivery time : 1-5 days.
HIPS
HIPS is a rubber-modified thermoplastic with high impact resistance, easy processing, and low cost. It is widely used in housings, packaging, automotive interiors, and lightweight structural applications.
Color : black.
Types : Impact-resistant HIPS, Brominated flame-retardant HIPS, Glass-fiber reinforced HIPS.
Surface finish :Polishing ，Sandblasting ，Coating.
Delivery time : 1-5 days.
Surface finish for CNC machining parts
Over the past 15 years, we have selected and briefly outlined more than 10 surface finished for various precision machined parts.
Machined finish
The prototype processed by the machine tool retains traces of tool machining.
Anodizing
Improves metal corrosion and wear resistance can be colored and protective coatings.
Polish
Improves surface smoothness and appearance for metals, ceramics, plastics, and PMMA.
Sand blasting
Uses high-pressure abrasives to create a clean, rough, matte surface finish.
Brushed finish
Adds textured patterns to metal surfaces, improving aesthetics.
Powder coating
Uses electrostatic application and heat curing to form a dense layer, improving corrosion resistance on parts.
Electroplating finish
Deposits a metal layer to improve corrosion and wear resistance.
Black oxidize
Forms a low-cost, anti-reflective coating on metal surfaces via simple chemical oxidation.
Alodine
Forms a corrosion-resistant coating via chemical conversion, improving adhesion and conductivity.
Heat treatment
Modifies metal microstructure to improve hardness, strength, toughness, and wear resistance.
CNC Machining Tolerances
Our CNC machining centers operate with precision tolerances certified to industry standards, ensuring uniform dimensional accuracy for every part and drawing requirement.
| Item | Specification |
|---|---|
| General Tolerance | ±0.08 mm – ±0.2 mm (Metal / Plastic Parts) |
| High Precision Tolerance | ±0.001 mm – ±0.05 mm (Metal / Plastic) |
| Minimum Wall Thickness | 1 mm (Plastic) / 0.5 mm (Metal) |
| Minimum End Mill Size | 1 mm |
| Minimum Drill Size | 0.5 mm |
| Maximum Machining Size | CNC Milling: 3000 × 1600 × 1000 mm， CNC Turning: Ø200 mm × Length 1000 mm |
| Minimum Machining Size | CNC Milling: 5 × 5 × 5 mm， CNC Turning: Ø2 mm × Length 2 mm |
| Production Quantity | Prototype: 1–50 pcs，Small Production: 50–100 pcs，Bulk Production: 100–500 pcs |
| Delivery Time | Prototype: 1–5 days，Bulk Production: To be discussed |
High-standard precision CNC machining for your part
Weldo provides customized CNC machining based on your drawings, ensuring precision and quality at every step.
Engineers perform strict dimensional control throughout production, with final inspections using advanced measuring equipment.
With 20+ years of experience and ISO 9001 certification, Weldo is trusted for reliable, high-quality machining services.
*20+ size testing equipment *30+ quality inspectors *ISO 9001:2015 certification
Weldo cnc machining solutions
Whether your CNC precision machining project production quantity is 1 or dozens or hundreds of batches, Weldo’s processing team can flexibly schedule your project and deliver it on schedule.
Fast Prototyping
CNC machining enables rapid prototyping, and ensures fast quotes, timely delivery, and precision parts that meet your specifications.
Lead time : 1-3 days
Capability : 1-100 units
Get a minimum discount of 15%
Small-batch production
Small-batch CNC machining bridges prototyping and mass production, optimizing processes to reduce costs while improving quality and accuracy.
Lead time : 5-15 business days
Capability : 100-1000 units
Meet your precision machining requirements
Finally, full-scale production
For high-volume precision parts, WELDO delivers consistent quality, accuracy, and efficiency using advanced multi-axis machining and extensive material expertise.
Lead time : 2- 5 weeks
Capability : above 1000 units
Consistent quality and high cost performance
Start your precision machining business
CNC Machining for Various Industries
From consumer electronics, automotive parts, medical devices, to aerospace, WELDO’s CNC machining services can meet the needs of producing components from small to large. We have partnered with renowned local companies in over 100 countries and regions worldwide and have received positive feedback.
CNC machining FAQ
What tolerances and surface finishes can CNC machining achieve?
Typical tolerances are around ±0.05 mm, while precision machining can reach ±0.01 mm or tighter with proper process control and inspection. Surface finish is commonly Ra 1.6–3.2 μm, and can be improved further through finishing passes or post-processing. Actual capability depends on material, geometry, fixturing, and measurement method.
What factors mainly affect CNC machining cost?
Cost is driven by material, machining time, part complexity (multi-side features, deep cavities, thin walls), fixturing and tooling needs, tool wear, tolerance and inspection requirements (such as CMM reports), surface treatments, and order quantity. Good DFM can often reduce both cost and lead time.
What should be considered when moving from prototyping to production?
Lock in material grade and condition, datums and CTQs, the machining route (rough/finish strategy and allowances), inspection standards and frequency, and revision/traceability requirements early. Validating assembly fit and process stability during prototyping helps reduce rework risk in production.
What information should I provide for an accurate quote?
Provide 2D drawings (tolerances/GD&T/surface requirements), a 3D model (STEP preferred), quantity and lead time, CTQ notes, and whether you need inspection documents (FAI, CMM, material certs). If the part involves welding, corrosive media, or temperature limits, include that in the RFQ.
