Shenzhen Perfect Precision Products Co., Ltd.

All Categories
Plastic Parts

Home /  Products /  CNC Machining /  Plastic Parts

Custom CNC-Milled FR-4 Curved Insulating Components

  • Introduction

Introduction

Drawing-Based Custom Manufacturing

Custom CNC-Milled FR-4 Curved Insulating Components

Drawing-based machining for curved profiles, drilled features, and project-specific requirements

Shenzhen Perfect Precision Products Co., Ltd. manufactures custom CNC-machined components from customer drawings, 3D CAD files, samples, or dimensioned sketches. The part shown here is a green curved non-metallic component with a shaped profile and visible circular holes. Its final material grade, dimensions, tolerances, and functional application are confirmed during engineering review.

Send your 2D drawing, 3D model, material specification, quantity, and finish requirements for a project-specific feasibility review and quotation.

2026年9月24日 1 (8).png

Why Buyers Use This Service

  • CNC milling for drawing-defined curved and non-metallic geometries
  • Hole positions, profile dimensions, and critical features reviewed against the supplied drawing
  • Prototype, small-batch, and production planning available on a project basis
  • DFM feedback to identify avoidable machining and assembly risks
  • Material documentation and inspection records available when specified in the quotation

Product-specific tolerances, electrical performance, material certification, and inspection scope are subject to drawing and order review.

Product Specifications

Specification Product-Specific Status Notes for Quotation
Part type Visually observed curved non-metallic CNC-machined component Final part name and assembly function to be confirmed
Material FR-4 indicated by the supplied image filename Confirm exact grade, laminate standard, thickness, glass/resin system, and material certificate requirement
Material condition To be confirmed Include any conditioning, storage, or moisture-control requirements if relevant
Manufacturing process CNC milling and drilling are plausible from the visible geometry Final routing is subject to DFM review
External geometry Curved profile with rounded/formed outer surfaces visible in the images Exact radii, angles, and reference datums require drawing confirmation
Holes Circular holes are visible on the presented faces Hole diameter, depth, pitch, position tolerance, countersink/counterbore, and whether through or blind must be confirmed
Dimensions To be confirmed from drawing or sample Do not scale dimensions from photographs
Dimensional tolerance Project-dependent Shenzhen Perfect states a general machining capability of ±0.01 mm and special precision areas of ±0.005 mm; applicability to this part requires engineering confirmation
Surface roughness Project-dependent Company reference capability states Ra 0.1–3.2; required value for this component must be specified on the drawing
Edge condition To be confirmed Specify deburring, edge break, fiber exposure, delamination, and cosmetic acceptance criteria
Surface treatment None visibly confirmed FR-4 finish and any additional coating or marking must be specified and feasibility-checked
Inspection Project-dependent CMM, 2D measurement, gauges, and inspection records are available within the documented factory quality capability
Order quantity To be confirmed Prototype, small-batch, and production quantities can be reviewed separately
Prototype availability Project-dependent Prototype route, material availability, and inspection scope affect lead time
Drawing formats PDF, STEP, IGS, STL, X_T, DWG, DXF and other common formats are supported according to company documentation Ideally provide both a 3D model and a dimensioned 2D drawing

The company-level capabilities above are not an automatic certification that this pictured component meets every listed value. The production specification becomes binding only after the drawing, material, inspection criteria, quotation, and order documents are reviewed and agreed.

Product-Specific Selling Points

1. Curved Profiles Reviewed for Fit, Not Just Appearance

The component includes a curved external contour that may interact with a mating surface, guide, housing, or assembly. A correct quotation should identify the functional datum, profile radius, contact area, and allowable variation. Shenzhen Perfect’s engineering team can review the drawing and flag unclear or unnecessarily tight call-outs before production.

2. Hole Locations Can Be Controlled from Drawing-Defined Datums

The visible circular holes are likely to be important for fastening, alignment, or assembly. Hole diameter, pitch, position, depth, and edge distance should be defined on the drawing. The factory’s documented inspection resources include CMM and 2D measuring instruments for project-specific dimensional verification.

3. Suitable for Custom Non-Metallic Component Development

The part is not presented as a standard catalog item. Buyers can start from a drawing, 3D model, physical sample, photograph, or dimensioned sketch. For incomplete designs, the engineering team can assess manufacturability and clarify the information needed before a firm quotation.

4. Material Requirements Are Kept Visible During Quoting

FR-4 is indicated by the supplied image filename, but the exact grade and compliance requirements must be confirmed. Buyers can specify thickness, laminate standard, flame-retardant requirement, electrical insulation requirements, and material documentation so that the quotation is based on the correct material route.

5. Edge and Surface Acceptance Can Be Defined Before Production

For machined laminate components, edge quality may matter as much as nominal dimensions. Buyers should state limits for burrs, exposed fibers, delamination, chipping, scratches, and visible tool marks. These requirements can be incorporated into the drawing review, inspection plan, and sample approval process.

6. Prototype-to-Production Planning Under One Manufacturing Partner

Shenzhen Perfect documents support for rapid prototyping, pilot runs, and production quantities, with a factory capacity stated at more than 300,000 pieces per month across its operations. The actual capacity and lead time for this component depend on material availability, geometry, quantity, inspection, and current production loading.

7. Quality Documentation Can Be Matched to the Project

The factory documents ISO9001:2015 and ISO13485:2016 quality certifications, six QA/QC inspectors, and five testing instruments including CMM and 2D measurement equipment. Material certificates, first-article inspection reports, and shipment inspection records should be requested in the RFQ when required.

Manufacturing Process and Quality Control

1. Drawing and DFM Review

Engineering reviews the 2D drawing and 3D model for datums, curved surfaces, hole positions, tool access, clamping, tolerances, edge conditions, and inspection requirements. Any assumption that affects price or feasibility should be listed in the quotation.

2. Material Verification

The selected FR-4 or equivalent laminate should be checked against the approved material designation. If a material certificate is required, state the required document type and material standard before order confirmation.

3. CNC Milling and Drilling

The machining route is selected according to the curved profile, hole geometry, size, quantity, and required edge quality. Multi-axis or multi-operation machining may be considered when it improves access or reduces handling risk; the final process is project-dependent.

4. Deburring and Edge Finishing

The drawing or quality agreement should define acceptable edge breaks, burr limits, fiber exposure, delamination, chipping, and cosmetic marks. These criteria are particularly important for parts that will be handled during assembly or installed near other components.

5. Surface Treatment or Marking

No surface treatment is confirmed by the supplied images. If marking, coating, or other finishing is required, specify the method, location, appearance, and any compliance documentation. Company documentation states that surface finishing can be managed in-house or through qualified local partners depending on the process.

6. Dimensional Inspection

Critical dimensions can be checked using the project inspection plan. The documented factory resources include a CMM, 2D measuring instruments, additional gauges, and QA/QC personnel. The quotation should state whether the order requires a sample report, first-article inspection report, full dimensional report, or certificate of conformity.

7. Final Inspection and Packaging

Finished parts are checked against the agreed drawing and acceptance criteria before packing. Packaging should protect curved edges and machined holes from impact, contamination, and transit damage. Custom packaging, labeling, or ESD-related requirements should be specified before quotation if applicable.

Applications and Target Industries

Confirmed from Company Capability Documentation

Shenzhen Perfect reports experience serving medical, aerospace, automotive, marine, robotics and automation, agricultural machinery, industrial equipment, and electronics customers. This establishes relevant supplier experience, not approval of this specific FR-4 component for every listed industry.

Plausible Applications Requiring Technical Validation

Depending on the drawing and operating environment, a part with this geometry may be considered for:

  • Electrical or electronic equipment insulation and separation
  • Custom guides, supports, spacers, or mounting components
  • Robotics and automation assemblies
  • Industrial equipment subassemblies
  • Prototype and development-stage non-metallic fixtures

The buyer must validate the final material, electrical, thermal, mechanical, cleanliness, and regulatory requirements for the intended application.

Customization and RFQ Requirements

For an accurate quotation, please provide as many of the following items as possible:

  1. 2D engineering drawing with units, datums, tolerances, and inspection notes
  2. 3D CAD model in STEP, IGS, STL, X_T, or another available format
  3. Confirmed material name, grade, thickness, and required material certificate
  4. Quantity for prototype, pilot, first order, and expected annual demand
  5. Critical profile dimensions, hole sizes, hole locations, and fit requirements
  6. Edge-quality requirements, including burr, fiber exposure, chipping, and delamination limits
  7. Surface finish, marking, packaging, and cleanliness requirements
  8. Required inspection documents, such as FAIR, full dimensional report, COC, or material report
  9. Intended application and operating environment, especially for electrical or safety-related parts
  10. Target delivery date and destination country

Request a Project Review

Send your drawing or sample details to discuss material selection, manufacturability, inspection scope, quantity-based pricing, and the most appropriate production route. A firm commitment on tolerance, lead time, certification, or performance is made only after engineering and commercial review.

Why Choose Shenzhen Perfect Precision Products Co., Ltd.?

  • Direct custom-manufacturing model: The company identifies itself as a custom OEM/ODM manufacturer rather than a trading-only supplier, with its own production and quality-control operations in Shenzhen.
  • Multi-process capability: Documented services include CNC milling, CNC turning, mill-turn machining, injection molding, sheet metal, casting, forging, rapid prototyping, 3D printing, gears, and linear modules.
  • Documented quality systems: ISO9001:2015 and ISO13485:2016 are identified in the supplied company documentation as verified certifications. Other certifications listed on company websites are not treated as confirmed here without original-document verification.
  • Inspection resources: The company documentation states that it has six QA/QC inspectors and five testing instruments, including CMM and 2D measurement equipment.
  • Engineering support: Drawing review, DFM feedback, prototype development, and project-dependent inspection documentation are available according to the company profile.
  • International supply experience: The company reports customers in more than 100 countries and regions. Export terms, shipping methods, and delivery commitments remain project- and destination-dependent.
  • IP and drawing confidentiality: The company states that NDAs can be executed on request and customer designs are treated as confidential business information. Contract terms should be agreed before releasing sensitive files.

Frequently Asked Questions

What material is this curved component made from?

The supplied image filename identifies FR4, and the component appears non-metallic. The exact FR-4 grade, laminate standard, thickness, flame-retardant classification, and material certificate requirement must be confirmed from the customer drawing or approved material specification.

Can you machine curved FR-4 components with drilled holes?

The visible part includes a curved profile and circular holes, and the company offers CNC milling and engineering-plastic machining. The final machining method, tool strategy, hole capability, and edge-quality result are confirmed after reviewing the drawing and material.

What tolerance can you achieve?

The company documents a general machining capability of ±0.01 mm and special precision areas of ±0.005 mm. These figures are not an automatic promise for this part. Achievable tolerance depends on the material, geometry, feature size, datum scheme, quantity, and inspection method.

Can you provide a prototype before production?

Prototype and small-batch production can be reviewed on a project basis. Lead time depends on drawing completeness, material availability, machining complexity, quantity, finishing, and inspection requirements. A specific sample date should be confirmed in the quotation.

What information is needed for a quotation?

A dimensioned 2D drawing and 3D model are preferred. Also provide the material grade, thickness, quantity, critical tolerances, hole details, edge-quality requirements, inspection documents, packaging requirements, target date, and destination.

Can you quote from a sample or photograph?

The company documentation states that samples, photographs, and dimensioned sketches can be used as a starting point for engineering review. A photo-only quotation may include assumptions; the final price and production specification require a confirmed drawing, measured sample, or approved model.

Can you provide inspection reports and material certificates?

Inspection records, first-article or full dimensional reports, and material certificates can be requested when specified for the project. The exact document type, sampling plan, and any additional cost should be agreed before order confirmation.

Is this part suitable for a medical, aerospace, or electrical application?

Suitability cannot be determined from photographs. The company reports relevant industry experience and holds ISO9001:2015 and ISO13485:2016 quality certifications, but the part-specific material, performance, cleanliness, regulatory, and validation requirements must be reviewed separately.

Can you protect our design information?

The company states that NDAs can be executed on request and customer drawings are treated as confidential. Buyers with sensitive designs should request the NDA and confirm document-control terms before sharing production files.

What surface finish is available?

No additional surface treatment is visible or confirmed for this product. If the part requires marking, coating, polishing, or another finish, specify the method, location, acceptance criteria, and compliance documents in the RFQ.

Start With a Drawing Review

A curved FR-4 component can look simple while still requiring careful control of profile geometry, hole location, edge quality, material grade, and inspection criteria. Shenzhen Perfect can review the manufacturing route, clarify missing specifications, and prepare a project-based quotation for prototypes, small batches, or repeat production.

Send your drawing, 3D model, sample details, quantity, and requirements today.

GET A FREE QUOTE

Our representative will contact you soon.
Email
Name
Company Name
Message
0/1000
Attachment
Please upload at least an attachment
Up to 3 files,more 30mb,suppor jpg、jpeg、png、pdf、doc、docx、xls、xlsx、csv、txt

RELATED PRODUCT

Get a Free Quote

Our representative will contact you soon.
Email
Name
Company Name
Message
0/1000