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?

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.)