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Changzhou Fenglan New Materials Co., Ltd.

Custom Prototype CNC Part

-- Steady & Reliable Manufacturer --

Introduction

A prototype CNC part is a physical representation of a design, machined in the target material (or a representative substitute) before committing to production tooling or high-volume manufacturing. CNC machining is uniquely well-suited for prototyping because it requires no molds, dies, or fixtures beyond a simple workholding setup — which means a designer can go from an approved CAD file to a functional part in hand in as little as 3 working days.

Fenglan supports product development teams at every stage: early proof-of-concept prototypes (where speed is everything), engineering validation prototypes (where the part must perform exactly as the production version will), and pre-production pilot runs (where the focus shifts to process repeatability). We accept quantities from 1 piece upward, in any of the materials we stock, and provide full dimensional inspection reports so design teams have the data they need to release for production with confidence.

Our rapid-quoting process delivers a price and DFM feedback within 24 hours for most parts — simply upload your STEP file and 2D drawing to get started.

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Specifications

Minimum Quantity 1 piece
Prototype Lead Time 3–7 working days (standard); <3 days (rush — inquire)
Max Part Size (Milling) 600 × 500 × 400 mm
Max Part Size (Turning) ⌀350 × 800 mm
Tolerance ±0.05 mm general; ±0.01 mm on critical features
Materials Available Aluminum (6061, 7075), brass (C36000), 304/316 SS, carbon steel, copper, titanium (Ti-6Al-4V), PEEK, Delrin, ABS
Machining Processes 3-axis milling, 4-axis milling, CNC turning, Swiss-type turning, drilling, tapping, threading
Surface Finishes As-machined, anodized, plated, bead-blasted, painted, passivated
Inspection Deliverables First Article Inspection (FAI) report, CMM report, material certificate on request
File Formats STEP, IGES, DWG, DXF, PDF (dimensioned drawing required)

Applications

  • Design Validation (DV): Verify that a new part's geometry, weight, and fit match the CAD model before tooling investment — catching expensive design errors early.
  • Functional Testing: Pressure-test valve prototypes, load-test structural brackets, and run-in prototype shafts in real assembly environments before finalizing drawings.
  • Trade Show & Sales Samples: High-quality finished prototypes that look and feel like production parts for customer demonstrations and investor presentations.
  • Bridge Production: When tooling lead times are long, CNC prototypes can fill customer orders while the production tooling is being built.
  • Legacy Part Reverse Engineering: Worn or obsolete parts are measured, redrawn, and a replacement prototype is machined to verify fit before batch production.
  • Multi-Iteration Development: Teams that use rapid iteration loops — design, prototype, test, redesign — rely on fast CNC prototyping to compress development timelines from months to weeks.

Advantages

  • No Tooling Cost: Unlike injection molding or die casting, CNC prototyping requires no upfront mold investment. Total cost for a single prototype is just material, machining time, and setup — often <$200 for simple aluminum parts.
  • True Material Properties: Prototypes machined from the same alloy as the production part provide accurate mechanical, thermal, and electrical test data — unlike 3D-printed polymer surrogates.
  • Fast Iteration: A design change can be incorporated into a revised prototype within 24–48 hours of drawing update, supporting weekly design-test cycles.
  • Production-Representative Finish: CNC prototype surface finishes, anodize colors, and plating thicknesses can match production specifications exactly, making samples suitable for customer approvals.
  • DFM Feedback Included: Our engineers review every prototype drawing for features that may be difficult or costly to produce at volume and provide written DFM recommendations before machining starts — at no extra charge.
  • Seamless Transition to Production: Because we use the same machines, materials, and processes for prototypes and production, scaling up is a smooth handoff rather than a re-qualification exercise.

Payment & Shipping

Payment Terms: We accept T/T (wire transfer), L/C at sight, PayPal, and Western Union. A 30% deposit is required before production begins, with the remaining 70% settled before shipment. For established long-term customers, flexible credit arrangements can be discussed on a case-by-case basis.

Lead Time: Standard production lead time is 7–15 business days after deposit confirmation. For urgent orders, expedited scheduling may be available — please contact our sales team to check availability.

Shipping & Logistics: We ship worldwide via DHL, FedEx, UPS, TNT, and by sea (LCL or FCL). Incoterms supported include EXW, FOB Ningbo/Shanghai, CIF, and CFR. The most cost-effective option is selected based on order weight and destination.

Packaging: All items are individually inspected, then packed in anti-rust film and foam-lined export cartons. Custom branding, inner packaging, and labeling are available on request. Packaging fully complies with international freight standards.

Quality Assurance: Every shipment is accompanied by an inspection report and, where applicable, material certificates (e.g., RoHS, REACH). We support third-party inspection arrangements (SGS, BV, etc.) if required.

FAQ

  • Q: How quickly can you deliver a single CNC prototype?
  • A: For simple parts in aluminum or brass, we can typically deliver within 3 working days of drawing approval. Complex parts with tight tolerances, deep pockets, or special materials may require 5–7 days. Rush delivery (1–2 days) is possible on selected parts — contact us with your files and deadline to check availability.
  • Q: What information do I need to provide to get a prototype quote?
  • A: Send us a STEP or IGES 3D file and a dimensioned 2D drawing (PDF or DWG) with all critical tolerances, surface finish callouts, and material specification. If you don't have a 2D drawing yet, send the 3D file with a brief description of tolerances and we will provide a budgetary quote — final pricing confirmed after the drawing is available.
  • Q: Can I order a prototype in one material and then switch to a different material for production?
  • A: Yes, this is common — for example, a designer may prototype in 6061 aluminum (cheaper, faster) and then specify 316L stainless for production. Be aware that different materials have different machinability, tool deflection, and thermal expansion, so minor dimensional differences on tight-tolerance features are possible. We can advise on what to expect.
  • Q: Do you provide an inspection report with prototypes?
  • A: Yes. A dimensional check report verifying all drawing callouts is included as standard. A full CMM-generated First Article Inspection (FAI) report with a balloon-checked drawing is available as an add-on — please specify this when ordering if required for your internal approval process.
  • Q: What is the difference between a prototype and a pilot run?
  • A: A prototype (1–5 pieces) is used for design validation and functional testing. A pilot run (typically 10–50 pieces) proves the production process — verifying that fixtures, programs, and quality control can consistently deliver parts to specification at rate. We support both stages with appropriate inspection levels and process documentation.
Changzhou Fenglan New Materials Co., Ltd.
Changzhou Fenglan New Materials Co., Ltd.
Changzhou Fenglan New Materials Co., Ltd.
Changzhou Fenglan New Materials Co., Ltd.
Changzhou Fenglan New Materials Co., Ltd.
Changzhou Fenglan New Materials Co., Ltd.
Changzhou Fenglan New Materials Co., Ltd.
Changzhou Fenglan New Materials Co., Ltd.
ABOUT US
Quality is Our Core Competitiveness
Changzhou Fenglan New Materials Co., Ltd.
Founded in 2010, As China Custom Prototype CNC Part Manufacturers and Custom Prototype CNC Part Company. we are dedicated to manufacturing precision parts for automotive, industrial, and electrical applications. Backed by advanced manufacturing and R&D, we provide high-quality products and trusted solutions to our clients. We provide a wide selection of components to meet diverse industry needs: Electric Shafts: Drive shafts, coil motor shafts, servo motor shafts, water pump motor shafts, industrial motor shafts, and magnetic levitation motor shafts. Hardware: Precision parts for medical equipment, water heater coils, plumbing fittings, and various gas springs. Our commitment is to support our customers with reliable performance and long-term value.
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