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Precision Bakelite & Garolite CNC Machining Services
Precision Bakelite & Garolite CNC Machining Services
Transform paper-based Bakelite and cotton-based Garolite phenolic laminates into high-precision custom components. From electrical insulators to mechanical gears, we deliver ±0.03mm tolerances with NO minimum order quantity.

Get Your Custom Phenolic Parts in 3 Simple Steps
Choose Your Material
Bakelite for electrical insulation or Garolite for mechanical strength
Select CNC Process
Milling, turning, drilling, threading, or laser cutting
Receive Quote in 8 Hours
With free DFM feedback and competitive pricing
Bakelite vs. Garolite: Choose the Right Phenolic Material
Understanding the fundamental difference between paper-based and cotton-based phenolic laminates is critical to selecting the optimal material for your custom machined components.
Bakelite (Paper Phenolic)
Multi-layer kraft paper impregnated with phenolic resin, cured under high heat and pressure. The industry standard for electrical insulation applications since 1907.
- Superior Dielectric Strength: 400-500 V/mil for high-voltage applications
- Dimensional Stability: Maintains tolerances across temperature fluctuations
- Heat Resistance: Continuous operation up to 120°C (248°F)
- Cost-Effective: Excellent performance-to-price ratio
- Smooth Surface: Minimal texture for professional appearance
Typical Applications: PCB test fixtures, terminal boards, transformer components, electrical insulators, switch panels
Learn More About Bakelite Machining →
Garolite (Cotton Phenolic)
Woven cotton or linen fabric layers impregnated with phenolic resin. Dramatically superior mechanical properties make it ideal for demanding structural applications.
- Exceptional Tensile Strength: 70-90 MPa vs. 40-50 MPa for paper grades
- Superior Impact Resistance: Withstands shock loads and vibration
- Excellent Wear Properties: Low friction, self-lubricating characteristics
- Outstanding Machinability: Complex features without cracking
- High Compressive Strength: Ideal for load-bearing applications
Typical Applications: High-strength gears, bearings and bushings, wear pads, structural brackets, jigs and fixtures
Learn More About Garolite Machining →| Property | Bakelite (Paper Phenolic) | Garolite (Cotton Phenolic) |
|---|---|---|
| Reinforcement Base | Kraft paper layers | Woven cotton/linen fabric |
| Primary Strength | Electrical insulation | Mechanical toughness |
| Dielectric Strength | 400-500 V/mil (Excellent) | 200-300 V/mil (Good) |
| Tensile Strength | 40-50 MPa | 70-90 MPa |
| Impact Resistance | Moderate | Excellent |
| Machinability | Good | Excellent (complex features) |
| Thread Strength | Limited (inserts recommended) | Excellent (holds threads well) |
| Surface Appearance | Smooth, uniform | Visible woven texture |
| Typical Cost | Lower (cost-effective) | Moderate (premium performance) |
Quick Decision Guide: Choose Bakelite when electrical insulation is paramount and mechanical loads are moderate. Choose Garolite when mechanical strength, impact resistance, or complex machined features are critical requirements.
Not Sure Which Material? Ask Our Engineers →Advanced CNC Machining Services for Phenolic Laminates
Machining phenolic thermoset materials presents unique challenges: abrasive fibers rapidly dull cutting tools, brittleness causes chipping under improper parameters, and fine dust requires specialized extraction. Our dedicated phenolic machining capabilities overcome these challenges to deliver precision components consistently.
Precision CNC Milling for Phenolic Laminates
-
Tolerance Capability
±0.03mm on critical dimensions -
Surface Finish
Ra 0.8-3.2μm achievable -
Max Workpiece Size
1200mm × 800mm × 100mm -
Min Feature Size
0.5mm width slots and pockets
Common Milled Features: Precision pockets for electronic components, mounting holes with tight positional tolerances, complex contoured surfaces for custom fixtures, slots and channels for cable management, engraved identification marks.
Learn More About CNC Milling Services →
CNC Turning & Threading for Cylindrical Phenolic Components
-
Max Turning Diameter
300mm -
Max Turning Length
1000mm -
Concentricity
±0.02mm achievable -
Surface Finish
Ra 1.6-3.2μm standard -
Thread Capability
Metric M2-M24, Imperial 4-40 to 1"-12 -
Live Tooling
Off-axis features (cross-holes, flats, keyways)
Common Turned Components: Precision insulating spacers and standoffs, custom bushings and sleeves, insulating shafts and dowels, threaded components with fine-pitch threads, bearing housings and mechanical bushings.
Learn More About CNC Turning Services →
Our CNC Turning Process in Detail
CNC lathe turning Garolite rod with precision control
Carbide insert achieving Ra 1.6μm surface finish
Fine-pitch threading with specialized tooling
Precision Drilling & Delamination-Free Hole Making
-
Hole Diameter Range
0.8mm to 50mm -
Hole Depth Capability
Up to 20× diameter for small holes -
Positional Accuracy
±0.05mm standard, ±0.02mm precision -
Delamination-Free
Compression drill bits for FR4/G10
Critical Applications: PCB test fixture drilling pads with hundreds of precision holes, terminal board mounting hole patterns, component mounting brackets requiring exact hole locations, bushing installations demanding tight diameter tolerances.
View All CNC Machining Capabilities →
Additional Machining & Finishing Services
Laser Cutting & Profiling
For thin phenolic sheet components requiring intricate profiles or tight nesting efficiency. Max sheet 1500×3000mm, thickness 0.5-12mm, kerf width ~0.2mm. Ideal for gaskets, insulating washers, and custom-shaped barriers.
Surface Finishing Options
As-machined standard (Ra 1.6-3.2μm), sanding & polishing (Ra 0.8-1.6μm), edge deburring, chamfering & beveling, surface coating (low-temp powder coating), laser/mechanical engraving for part identification.
Secondary Operations
Threaded insert installation (press-fit or heat-set brass), adhesive bonding of multi-component assemblies, hardware installation (studs, standoffs, fasteners), simple sub-assembly services, packaging and kitting.
Proven Expertise Across Demanding Industries
Our precision-machined Bakelite and Garolite components serve critical functions across industries where electrical insulation, mechanical strength, and dimensional stability are essential requirements.

Electronics & Electrical Equipment Manufacturing
Our Solution: We machine custom Bakelite Grade XXX test fixture plates using specialized compression drill bits for delamination-free holes. Our multi-axis CNC ensures precise hole positioning across large fixture areas, while the paper phenolic's superior dielectric strength (400-500 V/mil) provides reliable electrical isolation.
- PCB Test Fixtures & ICT Jigs: Custom drilling pads with precision probe holes for automated testing
- Terminal Boards & Bus Bar Supports: Insulating components maintaining safe electrical separation in power distribution
- Transformer Components: Insulating spacers, coil separators, and mounting brackets for high-voltage assemblies
- Switch Panels & Electrical Enclosures: Insulating barriers and divider plates for circuit breaker boxes
- Relay Housings & Connector Bodies: Structural support with electrical isolation in electromechanical components

Aerospace & Defense Applications
Our Solution: We fabricate custom FR4 flame-retardant phenolic brackets (UL 94V-0 rated) using precision CNC milling. The epoxy-glass laminate's superior dimensional stability and flame resistance meet aerospace requirements while delivering 30-50% weight savings versus metallic alternatives.
- Aircraft Interior Components: FAA-compliant cabin parts meeting strict flammability requirements
- Electrical Insulation Components: High-voltage insulators for demanding environmental conditions
- Structural Brackets & Mounts: Lightweight components with excellent strength-to-weight ratios
- Radar & Avionics Housings: Non-metallic enclosures providing electromagnetic transparency

Industrial Machinery & Equipment
Our Solution: We machine custom Garolite CE grade wear pads and guide rails that provide self-lubricating, low-friction performance without external lubricants. The cotton phenolic's exceptional wear resistance and chemical stability deliver extended service life in harsh conditions.
- Custom Gears & Sprockets: Wear-resistant components for light-to-medium loads with quiet operation
- Bearings & Bushings: Self-lubricating components for contaminated environments
- Wear Pads & Guide Rails: Low-friction components for conveyor and automated machinery
- Jigs & Fixtures: Durable tooling with non-marring, non-conductive properties
- Pump & Valve Components: Chemical-resistant parts for fluid handling equipment

Test & Measurement Equipment
Our Solution: We create complex multi-layer Bakelite test fixtures with precision-machined probe hole patterns, alignment pins, and mounting features. Our 5-axis CNC capabilities enable intricate geometries while maintaining tight tolerances critical for reliable electrical contact and repeatable test results.
- Functional Test Fixtures (FCT): Complex assemblies with integrated probe arrays for automated PCBA testing
- Wave Soldering Pallets: Heat-resistant fixtures withstanding repeated molten solder exposure
- Custom Test Beds: Stable, non-conductive platforms for electrical testing equipment
- Calibration Fixtures: Precision components requiring tight tolerances for repeatable results
Why Leading Companies Choose BeePlastic for Phenolic Machining
Machining phenolic thermoset materials requires specialized knowledge, equipment, and experience. Here's why industry leaders across electronics, aerospace, industrial equipment, and test measurement sectors trust us for critical phenolic components.
No Minimum Order Quantity (MOQ)
Single prototypes to production volumes—we machine any quantity with the same precision and quality. Perfect for design validation, emergency replacements, specialty components, or inventory optimization.
Order 1 piece or 10,000 pieces8-Hour Quotation Turnaround
Submit drawings and receive detailed quotes typically within one business day, including pricing, lead time, and DFM recommendations. Rapid prototyping: simple parts completed in 3-5 business days.
Same-day response for urgent projectsSpecialized Thermoset Expertise
Deep material science knowledge of phenolic formulations, reinforcement types, and curing processes. We select optimal cutting parameters, anticipate defects, and provide DFM feedback to improve part success rates.
10+ years phenolic machining experienceAdvanced CNC Equipment
Multi-axis CNC centers (3/4/5-axis), carbide & diamond tooling for abrasive materials, industrial HEPA dust collection, CMM and optical measurement (±0.01mm verification). ISO 9001:2015 certified processes.
±0.03mm tolerance capabilityChina Manufacturing Advantage
Competitive pricing typically 30-50% lower than Western manufacturers for equivalent quality. Combines Asian cost efficiency with international quality standards and English-speaking engineering support.
Save 30-50% on component costsComprehensive Quality Control
Incoming material inspection, first article verification, in-process monitoring, 100% final dimensional inspection, material certifications and compliance documentation. Every part meets specifications.
Zero-defect quality commitmentDesign Guidelines for Phenolic Machined Parts
Designing components from phenolic thermoset materials requires different considerations than metals or thermoplastics. Follow these guidelines to ensure your parts are manufacturable, cost-effective, and perform reliably in service.
Minimum Wall Thickness & Corner Radii
- Bakelite (paper phenolic): 1.5mm minimum, 3mm+ recommended for structural applications
- Garolite (cotton phenolic): 2.0mm minimum, 4mm+ recommended for load-bearing components
- Corner radii: Avoid sharp internal corners (0° radius) which create stress concentrations
- Minimum internal radius: 0.5mm for non-critical features, 1.0mm+ for stress-bearing areas
- External corners: Can be sharp if needed, but 0.5mm × 45° chamfers improve handling safety
Hole Design & Drilling Guidelines
- Minimum hole diameter: 0.8mm practical limit, 1.5mm+ recommended for production
- Hole spacing: Minimum 2× hole diameter center-to-center to prevent breakthrough
- Edge distance: Minimum 3mm from hole center to part edge (prevents delamination)
- Blind hole depth: Maximum 10× hole diameter for reliable drilling without breakout
- Delamination prevention: Specify requirement explicitly for critical through-holes
Threading Considerations
- Thread pitch: Use coarse-pitch threads (UNC/coarse metric) for better engagement strength
- Minimum engagement: 1.5× bolt diameter for adequate strength in native threads
- Edge distance for threads: Minimum 1.5× thread major diameter to prevent cracking
- High-stress applications: Specify heat-set brass threaded inserts for repeated assembly cycles
- Avoid: Very fine-pitch threads or repeated fastener installation in native threads
Tolerance & Dimensional Considerations
- Standard tolerances: ±0.1mm on general dimensions (suitable for most applications)
- Precision tolerances: ±0.03mm achievable on critical dimensions with inspection
- Hole position tolerance: ±0.05mm typical, ±0.02mm available for precision applications
- Flatness: 0.1mm per 100mm typical, better available with grinding
- Be realistic: Specify tighter tolerances only where functionally required to minimize cost
Surface Finish Expectations
- Bakelite as-machined: Relatively smooth with subtle layered texture, Ra 1.6-3.2μm
- Garolite as-machined: Visible woven fabric texture, Ra 2.0-3.2μm, pattern varies with weave
- Tool marks: Will be visible on machined surfaces—normal and functional for most applications
- Color variation: Cut edges appear lighter than exterior surfaces (normal material characteristic)
- Improved finish: Sanding & polishing available to Ra 0.8-1.6μm if required
Operating Conditions & Limitations
- Temperature limits: Bakelite -40°C to +120°C continuous, Garolite -40°C to +130°C
- Moisture absorption: Typically <1% by weight after 24h immersion (minimal but not waterproof)
- Chemical resistance: Good to oils/weak acids, moderate to alcohols, poor to strong acids/alkalis
- UV/outdoor exposure: Not recommended for long-term outdoor use without protective coating
- Indoor applications: Essentially unlimited service life in controlled environments
Downloadable Design Resources
Complete technical reference with material properties, machining tolerances, and design best practices
Decision tree for choosing Bakelite, Garolite, or FR4 based on application requirements
Self-assessment checklist to optimize designs for manufacturability and cost-effectiveness
Frequently Asked Questions About Bakelite & Garolite Machining
The fundamental difference is the reinforcement material. Bakelite uses paper layers and excels at electrical insulation with superior dielectric strength (400-500 V/mil), while Garolite uses woven cotton or linen fabric and delivers dramatically superior mechanical strength (70-90 MPa tensile vs. 40-50 MPa) and toughness.
They cannot be used interchangeably in most applications because their performance characteristics differ significantly:
- Choose Bakelite when: Electrical insulation is the priority and mechanical loads are moderate
- Choose Garolite when: Mechanical strength, impact resistance, or wear properties are critical
Not sure which material is right for your application? Ask our engineers for material selection guidance →
Yes, with proper techniques. Phenolic materials are brittle compared to thermoplastics, but we use specialized carbide tooling, optimized cutting parameters (feed rates, spindle speeds), and appropriate support fixtures to prevent cracking and chipping.
Our experience machining thousands of phenolic components ensures we understand how to work with these materials successfully. Minor edge fraying in Garolite's fabric base is normal and typically doesn't affect function, but we can provide edge finishing if required for aesthetic or sealing applications.
Concerned about part quality? Request a sample or prototype to evaluate our machining quality →
Our standard machining tolerances are ±0.1mm on general dimensions, which is suitable for most functional applications. For critical dimensions, we can achieve ±0.03mm tolerances with appropriate inspection protocols and documentation.
Hole positional tolerances: ±0.05mm standard, ±0.02mm available for precision applications like PCB test fixtures.
However, extremely tight tolerances (±0.01mm or tighter) across entire parts are often unrealistic in phenolic materials due to their brittleness and should be reserved for truly critical features to avoid unnecessary cost increases.
Need help determining appropriate tolerances? Submit your drawings for free DFM analysis →
No, we have NO minimum order quantity. We regularly machine single prototype parts and will provide the same precision and quality as production runs of thousands of pieces.
This allows you to:
- Validate designs before committing to larger orders
- Obtain emergency replacement parts for critical equipment downtime
- Economically source low-volume specialty components
- Optimize inventory management without carrying excess stock
When your needs grow from prototype to production, we seamlessly scale to higher quantities without requiring new supplier qualification or setup costs.
The decision depends on your priority requirements:
- Need maximum electrical insulation? → Choose Bakelite (paper phenolic) with 400-500 V/mil dielectric strength
- Need maximum mechanical strength and toughness? → Choose Garolite (cotton phenolic) with 70-90 MPa tensile strength
- Need flame retardancy certification (UL 94V-0)? → Choose FR4 epoxy-glass laminate
- Need superior moisture resistance? → Choose G10/FR4 epoxy-glass for high-humidity environments
If you're uncertain, provide us with your application details (operating conditions, mechanical loads, voltage levels, environmental factors) and our engineers will recommend the optimal material with technical justification.
Yes, phenolic materials can be threaded, but thread strength is limited compared to metals. Garolite holds threads significantly better than Bakelite due to its fabric reinforcement providing better thread engagement.
For best results with native threads:
- Use coarse-pitch threads (UNC rather than UNF, coarse metric vs. fine)
- Ensure adequate thread engagement (1.5× bolt diameter minimum)
- Avoid locations too close to edges (minimum 1.5× thread diameter edge distance)
For applications requiring repeated assembly/disassembly or high pull-out loads, we strongly recommend heat-set brass threaded inserts, which we can install during fabrication. This provides metal-equivalent thread strength in phenolic components and eliminates concerns about thread wear or stripping.
Delamination (separation of laminated layers) occurs when machining forces exceed the bond strength between layers, typically during drilling exit or when machining too close to edges with insufficient support.
Our prevention techniques:
- Compression drill bits: Apply pressure to both entry and exit sides simultaneously, virtually eliminating exit delamination
- Proper backing support: Supporting material behind drill exit points prevents unsupported drilling
- Optimized parameters: Drilling speeds and feeds specifically tuned for phenolic materials
- Appropriate edge distances: Design guidelines ensure adequate material around features
For FR4 and G10, which are more prone to delamination than phenolic, we use specialized drilling processes that achieve delamination-free results even for hundreds of closely-spaced holes in test fixtures.
Quotations: Typically provided within 8 business hours (often faster) of receiving your CAD files and specifications. Our quotes include pricing, realistic lead times, and any DFM recommendations.
Production lead times:
- Simple parts: 3-5 business days for rapid prototyping
- Standard production runs: 10-15 business days typical
- Expedited service: Available for urgent requirements at additional cost
Lead times depend on part complexity, quantity, and our current production schedule. We'll always provide a realistic delivery commitment upfront and keep you updated on progress throughout production.
Need parts urgently? Contact us about expedited manufacturing options →
Yes, we provide comprehensive documentation including:
- Material test reports: Certifications confirming grade, properties, and NEMA compliance
- First article inspection reports: Full dimensional data with measured values vs. specifications
- Certificates of compliance: Confirming parts meet your specifications
- Material Safety Data Sheets (MSDS): When required for safety or regulatory purposes
- Country of origin documentation: For customs/import requirements
Additional documentation such as certified inspection reports, material traceability, or specific test certifications can be provided as needed for regulated industries (aerospace, medical, etc.).
We accept all common CAD formats:
- 3D formats: STEP (.stp, .step), IGES (.igs, .iges), Parasolid (.x_t), STL
- 2D formats: PDF, DWG, DXF
- Native CAD: SolidWorks, Inventor, CATIA, Pro/E files
If you don't have CAD files, we can work from dimensioned sketches, physical samples for reverse engineering, or even photographs for simple geometries. 2D PDF drawings with dimensions are often sufficient for simple parts with basic geometries.
Ready to get started? Upload your files for instant quoting →
Ready to Get Started with Your Phenolic Machining Project?
Need Custom Phenolic Components?
From single prototypes to production volumes, we deliver precision-machined Bakelite and Garolite parts engineered to your exact specifications.
- ✓ NO minimum order quantity
- ✓ 8-hour quotation turnaround
- ✓ Free DFM analysis included
- ✓ ±0.03mm tolerance capability
Upload CAD files or describe your project requirements
Need Standard Sheets & Rods?
Browse our in-stock inventory of premium Bakelite and Garolite materials available for immediate shipment. Cut-to-size services available.
- ✓ NEMA XX, XXX, CE, LE grades in stock
- ✓ Sheets, rods, and tubes available
- ✓ Custom cut-to-size service
- ✓ Material certifications included
Fast shipping on standard material orders
Need help choosing? Our engineering team is available to discuss your specific application requirements and recommend the optimal solution.
📧 Email: sales@beeplastic.com | 💬 Live Chat Available | 📞 Phone Support
At BeePlastic, we don't just machine phenolic materials—we partner with you to deliver manufacturing solutions that meet your technical requirements, timeline, and budget. Our specialized expertise in Bakelite and Garolite machining, combined with advanced CNC equipment, rigorous quality control, and genuine customer focus, ensures your phenolic components perform reliably in demanding applications.
From single prototypes to production quantities, from simple spacers to complex test fixtures, we have the knowledge, capabilities, and commitment to exceed your expectations. Experience the difference that specialized phenolic machining expertise makes.
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