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FR-4 CNC Machining Service

Get custom FR-4 CNC machined parts from RapidDirect, with precise features and fast turnaround for prototypes and production.

  • Precision CNC machining
  • Custom parts for prototypes and production
  • Fast turnaround
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CNC machined FR4 part 1

FR-4 in CNC Machining

FR-4 is a composite made from woven fiberglass cloth and an epoxy resin binder. It combines mechanical strength, flame resistance, electrical insulation, and dimensional stability. RapidDirect CNC machines FR-4 Aqua Green and FR-4 Yellow for printed circuit boards, electrical insulators, aerospace components, and custom parts.

  • Electrical insulation: FR-4 provides electrical insulation for circuit boards and electronic components.
  • Flame resistance: Its flame-resistant properties support demanding electrical applications.
  • Mechanical strength: The fiberglass reinforcement gives FR-4 strength and rigidity.
  • Dimensional stability: FR-4 supports consistent performance in precision components.

Selection note: FR-4 is a glass-fiber-reinforced epoxy laminate rather than a melt-processable thermoplastic. CNC machining supports precise insulating panels, circuit board substrates, and custom electronic components.

FR-4 CNC Machining Capabilities

Price$$
Lead timeUnder 10 days
Minimum wall thickness0.5 mm
Tolerances±0.005 in (±0.125 mm)
Maximum part size1200 × 500 × 150 mm
Available materialFR-4 Aqua Green and FR-4 Yellow
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FR-4 Material Specifications

Mechanical Properties

Tensile strength, yield340 MPa
Elongation at break2–3 %
Hardness110 Rockwell R
Heat deflection temperature150 °C

Physical Properties

Density1.85 g/cm³

FR-4 Manufacturing Facilities

FR-4 Parts & Applications

FR-4 CNC Machining FAQs

Learn about FR-4 applications, material properties, and CNC machining capabilities.

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