OEM Custom Precision Spare Plastic Parts, CNC Machining Medical /Industrial/Machinery/Motorcycle/Bike/Engine/Motor/Car/Automotive/Auto Accessories

Product Description

                                               

Parameter	Details
Material Options	ABS, PC (Polycarbonate), PMMA (Acrylic), POM (Delrin), Nylon, PE, PEEK, etc.
Tolerance	±0.1 mm (Standard), ±0.05 mm (High Precision)
Surface Finish	As-machined, Sanding (Ra 1.6-3.2 μm), Polishing (Mirror/Glossy),Chrome plating, Spray paiting ,silike
Wall Thickness	Minimum 1 mm (Recommended ≥1.5 mm for stability)
Machining Process	3/4/5-Axis CNC Milling, CNC Turning
Lead Time	7-10 Days (Standard for prototype service ), Days (Rush Service)
Post-Processing	Painting, Laser Engraving, UV Coating, Assembly, Annealing (Stress Relief)
File Formats	STEP, IGES, STL, DXF, DWG, X_T (Parasolid)

FAQ

 

1. What types of plastics can be CNC machined?

We machine a wide range of engineering and commodity plastics, including:

• ABS (good toughness, moderate cost)

• Polycarbonate (PC) (high impact resistance, transparent options)

• Acrylic (PMMA) (optical clarity, UV resistance)

• POM (Delrin) (low friction, high stiffness)

• Nylon (PA6, PA66) (wear-resistant, flexible)

• PEEK (high-temperature, chemical-resistant)

• PTFE (Teflon) (non-stick, chemical inertness)

• HDPE & UHMW (low-cost, durable)
   

2. What tolerances can be achieved with CNC plastic machining?

• Standard tolerance: ±0.1 mm (±0.004")

• High precision: ±0.05 mm (±0.002") or better (depends on material and part geometry)
  
  3. How thin can CNC-machined plastic walls be?

• Minimum recommended wall thickness: 1.0 mm (0.04")

• For rigid plastics (e.g., PEEK, PC): Can go down to 0.5 mm with careful machining.
   

4. What surface finishes are available?

• As-machined (light tool marks)

• Sanded (smooth, Ra 1.6-3.2 μm)

• Polished (glossy/mirror finish)

• Bead blasted (matte texture)

• Painting/coating (custom colors, textures)
   

6. Does CNC machining cause stress or warping in plastic parts?

• Plastics are softer than metals, so improper machining can cause heat buildup, leading to warping or melting.

• We use sharp tools, optimized feeds/speeds, and air cooling to minimize stress.

• Annealing (heat treatment) can be applied for critical parts to relieve internal stresses.
   

7. Can you machine threaded holes in plastic?

Yes! We can machine:

• Standard threads (M3, M4, UNC, etc.)

• Self-tapping threads (for screws)

• Helical inserts (for reinforced threads in soft plastics)
   

8. What file formats do you accept for CNC machining?

Preferred formats:

• STEP (.stp) (best for 3D models)

• IGES (.igs)

• Parasolid (.x_t)

• DWG/DXF (for 2D drawings)

• STL (for prototyping, less precise)
   

9. How long does CNC plastic machining take?

• Prototype lead time: 7-10 days

• Production runs: 10-15 days (depending on quantity and complexity)

• Rush service: Available (contact for expedited options)
   

10. Why choose CNC machining over 3D printing for plastic parts?

Factor	CNC Machining	3D Printing
Accuracy	Higher (±0.05 mm)	Lower (±0.1-0.3 mm)
Material Strength	Fully dense, isotropic	Layer adhesion issues
Surface Finish	Smoothest (polishable)	Layered texture
Cost (Low Volume)	Higher	Lower
Best For	High-precision, functional parts	Prototypes, complex geometries

11. Do you provide post-processing services?

Yes! We offer:

• Deburring & smoothing

• Painting & dyeing

• Laser engraving/text

• Assembly 

• Quality inspection (CMM, micrometers)
   

12. How do I request a quote?

Submit your 3D model (STEP/IGES) + 2D drawings (PDF/DWG) with:

• Material preference

• Quantity

• Tolerances & surface finish requirements

• Any special notes (threads, inserts, etc.)