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Precision Machining of FR-4 & G-10 Epoxy Glass Fiber Composites
Custom FR-4 & G10 Fiberglass Epoxy Sheet CNC Machining Services
Precision CNC machining of glass fiber reinforced epoxy laminates for PCB test fixtures, ICT bed of nails fixtures, wave solder pallets, high-voltage insulators, and semiconductor handling equipment. Specify the required material grade, flame rating and documentation so availability can be checked for your project.
Frustrated With Your Current FR-4/G10 Fiberglass Machining Supplier?
Engineers and procurement managers sourcing custom epoxy glass laminate parts often face these common challenges with traditional suppliers.
High MOQ Requirements
Most fiberglass epoxy machining suppliers require 100+ piece minimums, making prototype development and small batch production of glass fiber reinforced plastic parts expensive. We accept orders from just 1 piece – ideal for R&D, engineering samples, and low-volume production of garolite components.
Long Lead Times
Tell us your required date and delivery destination. Production lead time depends on material availability, part geometry, quantity and inspection requirements; transit time is confirmed separately in the quote.
Delamination & Quality Issues
Fiberglass cloth layers separating, chipped edges, and fiber pullout on machined phenolic laminate parts waste your time and budget. Our diamond-coated tooling and controlled parameters ensure clean edges, no delamination, and consistent tolerances across all epoxy glass cloth laminate machining.
Missing Documentation
Many G10 garolite suppliers cannot provide UL flame ratings, material test reports, or substance testing documentation required for electronics manufacturing compliance. We provide SGS and CNAS laboratory test reports verifying material properties and restricted substance testing.
Poor Technical Communication
Share the drawing revision, material grade and critical requirements in one enquiry. We aim to reply within one business day; a complete quotation may require further technical or shipping information.
Hidden Costs & Fees
For custom machining, the quotation should identify the agreed specification, quantity, production timing, shipping arrangements and any additional requirements before an order is placed.
What Are FR-4 & G10 Fiberglass Epoxy Laminates?
FR-4 and G10 are high-performance thermoset composite laminates consisting of woven E-glass fabric (fiberglass cloth) impregnated with epoxy resin binder. These glass fiber reinforced plastic (GFRP) materials are also known as garolite, epoxy glass laminate, glass epoxy composite, or fiberglass epoxy board – all referring to the same category of electrical-grade laminated insulation materials.
Unlike thermoplastics such as Nylon, POM (Delrin), or ABS, FR-4 and G10 epoxy glass cloth laminates cannot be melted and re-molded. This thermoset nature provides exceptional dimensional stability, chemical resistance, and mechanical strength retention at elevated temperatures up to 170-180°C continuous operation – critical for wave solder pallets, burn-in boards, and high-temperature electrical insulation applications.
Material selection: FR-4 and G10 grade names are not interchangeable purchase specifications. Confirm the exact laminate grade, thickness, color, electrical requirements and any required flame-rating evidence. A material substitution requires review and approval for the application.
Our precision CNC machining services transform raw FR-4 and G10 sheets into custom components for electronics testing, PCB assembly tooling, semiconductor manufacturing, electrical power equipment, and industrial automation applications.
FR-4 vs G10 Garolite: Choose The Right Fiberglass Epoxy Laminate
Both FR-4 and G10 are woven glass cloth epoxy laminates with similar properties, but they serve different engineering requirements. Understanding the differences helps you select the optimal glass fiber reinforced material for your custom precision parts.
FR-4 Epoxy Glass Laminate
Flame Retardant Grade | NEMA FR-4 | UL 94 V-0
FR-4 is a woven fiberglass fabric with epoxy resin binder containing brominated flame retardant compounds. Achieves UL 94 V-0 rating – self-extinguishes within 10 seconds when flame source is removed. The global standard material for PCB substrates, ICT test fixture bases, functional test fixtures, and applications requiring fire safety compliance in electronics manufacturing.
G10 Garolite Epoxy Laminate
High-Strength Grade | NEMA G-10 | Maximum Mechanical Performance
Confirm the specific G10 laminate grade and supplier data sheet for the mechanical, electrical and environmental requirements of your part. Do not infer a fixed strength improvement from the grade name alone.
⚠️ Critical Material Substitution Rule for Engineers
Do not assume equivalence. Review the exact grade, flame-rating evidence, electrical properties, mechanical requirements and operating environment before approving a substitution. Ordinary FR-4/G10, ESD grades and multilayer color requirements need separate confirmation.
Complete FR-4 vs G10 Fiberglass Epoxy Properties Comparison
The comparison below identifies properties to check with the material supplier. Numerical reference values are not a certificate for the supplied grade or batch. Send the required data sheet, test method and documentation requirements for review before ordering.
| Property | FR-4 Epoxy Glass Specification | G10 Garolite Specification | Application Impact |
|---|---|---|---|
| Flame Retardancy (UL 94) | V-0 (Self-Extinguishing) | HB (Horizontal Burn) | FR-4 required for UL/CE compliance in electronics |
| Flexural Strength (Bending) | 340-382 MPa | 380-450 MPa | G10 better for structural load-bearing components |
| Tensile Strength | ≥300 MPa | ≥345 MPa | Confirm the specified grade for the mechanical requirement |
| Continuous Operating Temp | 170°C | 180°C | Both excellent for wave solder pallet applications |
| Glass Transition Temperature (Tg) | 130-140°C | 140-150°C | G10 maintains rigidity at higher temperatures |
| Water Absorption (24h) | <0.15% | <0.10% | Both low absorption for electrical insulation |
| Density | 1.9-2.1 g/cm³ | 1.8-2.0 g/cm³ | Nearly identical weight for fixture design |
| Dielectric Strength | ≥16.5 kV/mm | ≥18 kV/mm | Both excellent for high-voltage insulation |
| Volume Resistivity | 10¹⁴ Ω·cm | 10¹⁴ Ω·cm | Identical electrical insulation performance |
| Dielectric Constant (1MHz) | 4.5 | 4.4 | Similar RF/microwave properties |
| CNC Machinability | Excellent | Excellent | Both machine well with diamond tooling |
| Achievable Tolerance | Drawing review required | Drawing review required | Material, geometry and inspection method determine the quoted tolerance. |
| Restricted Substance Testing | Available (SGS/CNAS) | Available (SGS/CNAS) | Test reports meet electronics industry requirements |
FR-4 & G10 Fiberglass Epoxy CNC Machining Services
Send the part geometry, laminate grade and inspection requirements to review the appropriate machining process for your component.
CNC Milling & Routing
Request milling or routing for profiles, pockets, holes and other specified features. Machining feasibility, edge condition and acceptance criteria are reviewed against the drawing and material grade.
View CNC Milling Services →Precision Drilling & CNC Turning
Send the hole sizes, positions, fits and inspection requirements for review. CNC turning enquiries can include insulating bushings, spacers and cylindrical components; feasibility is confirmed for the specified laminate form and grade.
View CNC Turning Services →Laser Engraving & Marking
CO2 laser systems for part number engraving, alignment marks, fiducials, and identification on FR-4 test fixtures and garolite components. Permanent markings for traceability in electronics manufacturing and PCB assembly tooling.
View Laser Services →Cut-to-Size Panel Sawing
Send the required panel length, width, thickness, quantity and edge requirements. Available stock dimensions and the cutting process are confirmed for the quoted requirement.
View Cutting Services →Threading & Insert Installation
Tapped holes M2-M20 metric and imperial threads. Brass, stainless steel, and heat-set threaded insert installation for enhanced pull-out strength in high-cycle test fixture applications. Essential for ICT and functional test jig assemblies.
View Fixture Services →Assembly & Secondary Operations
Complete finishing including edge chamfering, deburring, surface polishing, threaded insert installation, hardware assembly, and custom sub-assemblies. Plastic welding and thermal forming capabilities also available.
View All CNC Services →Where FR-4/G10 CNC Machined Fiberglass Parts Are Used
Our precision glass epoxy laminate components serve critical applications across electronics testing, PCB assembly, semiconductor manufacturing, electrical power equipment, and industrial automation industries.
PCB Test Fixtures & ICT Bed of Nails
Custom ICT in-circuit test fixtures, functional test fixtures (FCT/FVT), bed of nails probe fixtures, burn-in boards, flying probe adapter plates, and ATE (automatic test equipment) interface fixtures. FR-4's dimensional stability ensures consistent probe alignment across thousands of test cycles in high-volume electronics manufacturing.
Wave Solder Pallets & SMT Carriers
High-Tg FR-4 wave solder pallets, selective solder fixtures, SMT reflow carriers, through-hole component protection masks, and PCB assembly tooling. Glass epoxy laminates withstand repeated thermal cycling through solder wave (260°C peak) without warping, protecting sensitive SMD components during through-hole soldering processes.
High-Voltage Electrical Insulation
Potential applications include transformer spacers, bus bar supports and electrical isolation components. Specify the exact electrical, thermal and flame-rating requirements; the material grade and required evidence must be confirmed for the application.
Semiconductor & Wafer Handling
Probe card stiffener rings, wafer handling end effectors, vacuum chuck insulation plates, chip carriers, cleanroom-compatible handling tools, and semiconductor test sockets. Non-contaminating, dimensionally stable fiberglass epoxy components meet fab environment requirements for precision wafer processing equipment.
Industrial Automation & Robotics
Sensor mounting brackets, encoder isolation plates, pneumatic manifold insulators, robot gripper end effectors, servo motor isolation components, and positioning fixtures. High flexural strength G10 withstands industrial vibration while providing electrical isolation between sensors and metal structures.
Laboratory & Scientific Instruments
Custom sample holders, optical component mounts, microscopy stage inserts, electrode holders, analytical equipment fixtures, spectrometer components, and research apparatus. FR-4 and G10's excellent machinability enables complex geometries with tight tolerances for precision scientific instrumentation.
FR-4/G10 CNC Machined Fiberglass Epoxy Parts Gallery
Browse examples of precision glass fiber reinforced epoxy components manufactured for electronics, semiconductor, and industrial customers worldwide.
Simple 5-Step Custom Fiberglass Machining Process
From your CAD design files to delivered precision FR-4 and G10 parts – fast turnaround and exceptional quality guaranteed.
Submit Design Files
Use the enquiry page to share dimensions, quantity and critical requirements. Provide a file link or use the email drawing route shown on that page; this page does not upload files.
Receive Quote & DFM
First reply target: one business day. A complete quote follows review of the drawing, material, quantity, inspection requirements and delivery destination.
Confirm Order
Approve quote, select material grade (FR-4 or G10), confirm color requirement, and production schedule
CNC Production
Production and inspection follow the agreed drawing, specification and acceptance requirements.
Delivery
Packaging, dispatch timing, shipping method, charges and tax responsibilities are confirmed for the quoted order.
The BeePlastic Fiberglass Machining Advantage
What sets us apart from other FR-4/G10 CNC machining and glass epoxy laminate fabrication suppliers.
Prototype and Batch Enquiries
Send your initial quantity and any planned repeat volume. Material availability, minimum quantity, sample scope and production options are reviewed for the project.
Production and Transit Timing
Production lead time and transit time are separate. Include the target date, country and delivery postcode; feasibility and any expedited arrangements are confirmed in the quote.
Agreed Tolerances and Inspection
Mark critical dimensions, fits and inspection needs on the drawing. Achievable tolerances and any required reports are agreed for the material and part before ordering.
Shipping Reviewed for Your Order
Custom machining requires its own quotation. Provide the delivery destination so shipping method, charges and tax responsibilities can be confirmed before ordering.
Expert Engineering Support
Share the application and critical part features for a material and process discussion. State any required engineering review or documentation so its scope can be confirmed.
Complete Fabrication Services
For other plastics, explore laser cutting/engraving, plastic welding, thermal bending and injection molding. These links describe other fabrication services; they do not establish suitability for a thermoset FR-4/G10 laminate.
FR-4 & G10 Fiberglass Epoxy Laminate: The Complete Guide for Engineers
FR-4 (Flame Retardant Grade 4) and G10 (Garolite Grade 10) are the most widely used glass fiber reinforced epoxy laminates in the electronics, electrical, and industrial sectors. These NEMA-grade thermoset composite materials combine woven E-glass fabric (fiberglass cloth) with epoxy resin to create exceptional electrical insulation, mechanical strength, and dimensional stability. Also known as epoxy glass laminate, glass epoxy composite, fiberglass epoxy board, GFRP (glass fiber reinforced plastic), or garolite, these materials are essential for manufacturing PCB test fixtures, ICT bed of nails fixtures, wave solder pallets, SMT carriers, high-voltage insulators, and precision mechanical components.
Material selection must use the exact grade and supplier data sheet. Confirm flame-rating evidence, electrical properties, mechanical requirements and operating temperature for the application. Do not assume FR-4, G10 and ESD laminates are interchangeable.
Common FR-4/G10 Applications
- ICT In-Circuit Test Fixtures & Bed of Nails Probes
- Functional Test Fixtures (FCT/FVT)
- Wave Solder Pallets & Selective Solder Fixtures
- SMT Reflow Carriers & PCB Assembly Tooling
- Burn-in Board Substrates & ATE Interface Plates
- Probe Card Stiffener Rings
- Transformer Spacers & Coil Forms
- High-Voltage Bus Bar Supports
- Switchgear Insulators & Arc Shields
- Motor Slot Wedges & Generator Insulation
- Semiconductor Wafer Handling End Effectors
- Industrial Sensor Mounting Brackets
Key Material Properties & Benefits
- Excellent Electrical Insulation (≥16.5 kV/mm dielectric strength)
- High Volume Resistivity (10¹⁴ Ω·cm)
- UL 94 V-0 Flame Retardancy (FR-4)
- High Flexural Strength (340-450 MPa)
- Excellent Dimensional Stability
- Low Moisture Absorption (<0.15%)
- Continuous Operating Temperature to 170-180°C
- Glass Transition Tg 130-150°C
- Good Chemical Resistance
- Excellent CNC Machinability
- Non-Magnetic Properties
- Low Thermal Expansion
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FR-4/G10 Fiberglass Epoxy CNC Machining FAQ
Expert answers to common questions about glass epoxy laminate materials, CNC machining capabilities, and ordering custom garolite parts.
What is the difference between FR-4 and G10 fiberglass epoxy laminate?
What colors of FR-4 and G10 fiberglass sheets do you stock?
What CNC machining tolerances can you achieve on FR-4/G10 parts?
Is there a minimum order quantity (MOQ) for FR-4/G10 machining?
Do you provide material test reports and quality documentation?
How much does custom FR-4/G10 CNC machining cost?
What is your standard lead time for FR-4/G10 machined parts?
Can you machine thin FR-4 sheets without delamination?
What CAD file formats do you accept for FR-4/G10 machining quotes?
Can you install threaded inserts in FR-4 fiberglass parts?
Ready to Start Your FR-4/G10 Fiberglass CNC Machining Project?
Send your drawing or dimensions, exact material grade, quantity and critical requirements for review. Use the enquiry page for a file link or its email drawing route. Production timing, shipping and any documentation requirements are confirmed for the quoted project.
Custom-machining production timing, shipping method, charges and tax responsibilities are confirmed in the quotation. Standard-product shipping terms apply only to the listed products covered by the shipping policy.
Precision Plastic Parts We've Delivered
Explore material and component examples, then send your drawing, material grade, quantity and critical requirements for review.
QUOTE ENQUIRIES
Send a drawing, sketch or dimensions
BATCH REQUIREMENTS
Share your prototype or production quantity for review
TOLERANCES REVIEWED
Critical dimensions confirmed for each quoted project
MATERIAL OPTIONS
Grade, size and availability confirmed for your requirement