CNC plastic machining
Weldo provide more than 20 type of plastic material,Depending on the material properties, the minimum accuracy can be as low as 0.005mm. Contact us for more details and a quote.
Delivery:1-5 days.
Other process options:Molding,3d printing,extrusion,surface treatment.
Common materials range:
What is cnc plastic machining ?
CNC machine tools control cutting tools to perform operations such as cutting, drilling, milling, and turning on plastic workpieces according to pre-programmed instructions, in order to manufacture plastic parts or products that meet specific design requirements. They are widely used in many industries such as electronics, automobiles, medical, and toys.
Common material type of plastic for machining
ABS
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
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
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
PE
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
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 plastic machining part
Based on over 15 years of machining experience, we have compiled the following list of surface finish processes used for various parts made from plastic material.
Machined finish
The prototype processed by the machine tool retains traces of tool machining.
Anodizing
Polish
Sand blasting
Uses high-pressure abrasives to create a clean, rough, matte surface finish.
Brushed finish
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
Advantage of plastic parts
Application of plastic machining part:
1. Automotive Industry
Used in interiors, light covers, and structures to reduce weight and improve efficiency.
2. Electronics and Electrical Industry
Applied in housings and connectors, offering insulation and design flexibility.
3. Medical Industry
Used for tools and disposables, with good biocompatibility and sterilization ability.
4. Industrial Machinery
Used in gears and bearings, providing low friction and reduced maintenance.
5. Aerospace Industry
Used in structural parts, offering lightweight, strength, and heat resistance.
FAQ of plastic machining part
Why are plastic parts prone to warping and deformation?
How to solve flow marks and burrs on plastic parts?
Flow marks are mostly due to improper injection speed and temperature, while burrs usually result from excessive mold clearance or high injection pressure. They can be fixed by adjusting parameters and repairing the mold.
What to do if plastic parts lack strength and break easily?
You can use materials with better toughness, or optimize the product structure by adding ribs to reduce stress concentration.
How to improve poor heat resistance of plastic parts that soften at high temperatures?
High-temperature resistant modified plastics can be used, such as glass fiber reinforced materials and heat-resistant engineering plastics, to meet higher temperature requirements.
Can plastic be combined with metal?
Yes, common methods include insert molding, overmolding, snap-fit assembly and adhesive bonding, combining the lightweight advantage of plastic with the high strength of metal.
