ISO 9001:2015 Certified Precision Prototyping & Low-Volume Manufacturing, 3-6 Days Dispatch, Global Delivery. [email protected]
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One-stop CNC Machining, Silicone Vacuum Casting & 3D Printing direct from source factory. Strict quality control. [email protected]
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LK PROTOTYPE / FROM DESIGN VALIDATION TO PRODUCTION

Rapid Prototyping
& Low-Volume Manufacturing

LK Prototype helps engineers, product teams, and buyers turn designs into metal and plastic parts through CNC machining and vacuum casting. Get physical prototypes you can inspect, assemble, and present—so you can move forward with confidence.

STEP / IGES / STL / PDF accepted · Process, pricing, and lead time confirmed after file review

The LK Prototype team in Dongguan, China
Work directly with our manufacturing teamOur Dongguan factory · Engineering and production under one roof
Meet Our Team ↗
Start with one prototypeFrom design validation to pilot runs
Metal & plastic partsProcesses matched to your part and budget
DFM feedbackIdentify manufacturing issues early
NDA supportDiscuss confidentiality before sharing files
START WITH YOUR PROJECT

Define what to test. Then choose how to make it.

Appearance reviews, assembly checks, and pilot production call for different materials, tolerances, and budgets. We help match the manufacturing approach to your validation goals.

01 / PRODUCT & INDUSTRIAL DESIGNERS

Bring your design into the real world

Evaluate shape, proportions, color, texture, and feel. Use appearance models for design reviews, trade shows, and stakeholder presentations.

Explore Appearance & Functional Models ↗
02 / R&D & MECHANICAL ENGINEERS

Check fit and function before tooling

Define mating dimensions, material properties, and test conditions. Use CNC prototypes or another suitable process to evaluate assembly and performance.

Explore CNC Prototyping ↗
03 / BUYERS & PROJECT MANAGERS

Plan costs and delivery with clearer requirements

Share quantities, finishes, inspection documents, and target dates up front. We assess a suitable low-volume production approach to reduce back-and-forth during quoting.

Explore Low-Volume Manufacturing ↗
MANUFACTURING SERVICES

CNC machining, vacuum casting,
and complete prototypes

Choose a process around the part’s purpose. Start with material, geometry, and validation requirements, then balance quantity, finish, and budget.

Appearance, structural, and functional prototype models
03 / PROTOTYPE MODELS

Appearance & Functional Prototypes

Turn form, assembly, and demonstration requirements into manufacturable parts and assemblies for design reviews, structural validation, and product presentations.

Explore Prototype Models ↗
Low-volume production of plastic and metal parts
04 / LOW-VOLUME PRODUCTION

Low-Volume Metal & Plastic Parts

Produce small batches for assembly trials, market testing, and product development. We assess the manufacturing route and repeat-order costs against your material, quantity, and future needs.

Explore Low-Volume Production ↗
Painted prototypes and surface finishing examples
05 / SURFACE FINISHING

Painting & Surface Finishing

Evaluate sanding, painting, screen printing, bead blasting, or anodizing for the material and application, while protecting appearance requirements and critical mating dimensions.

Explore Finishing Options ↗

Need 3D printing, sheet metal fabrication, or injection molding? Share the application, material, and quantity so our engineers can assess a suitable approach.

Discuss Your Process Options ↗
CHOOSE THE RIGHT PROCESS

CNC, vacuum casting, or 3D printing?

Start with what you need to validate and which materials you need. Then compare quantities and total costs. This guide is a starting point; the final process is confirmed after file review.

Prototyping and low-volume manufacturing processes compared
ProcessBest suited toWhat to specifyKey considerations
CNC machiningParts in a specified metal or plastic for checking structure, assembly, and fit.Material grade, critical tolerances, datums, threads, and surface requirements.Deep cavities, thin walls, and limited tool access can affect the process and cost.
Vacuum castingMultiple copies of plastic-like parts when the design is relatively stable.Master pattern, casting resin, appearance standards, quantity, and mold requirements.Casting resins differ from injection-molding materials. Confirm suitability for performance testing.
3D printingEarly form checks, complex geometries, and designs that need rapid iteration.Printing process, material, build orientation, support marks, and finishing.Layer lines, directional properties, and material behavior can affect visual and functional testing.
Injection moldingStable designs that require a specified plastic and repeat production.Tooling budget, material grade, mold trials, quantity, and design readiness.Compare total tooling and part costs, rather than unit price alone.

On mobile, swipe to see the full comparison. Unsure which process to choose? Send your files and testing goals.

Materials: start with the application

Aluminum, stainless steel, and engineering plastics call for different approaches. Tell us about strength, temperature, appearance, and environmental requirements to help narrow down the material options.

Tolerances: identify critical dimensions

Distinguish mating dimensions from general dimensions and include a 2D drawing. Achievable tolerances depend on material, geometry, size, and process and should be agreed before production.

Cost: consider quantity and finishing

Material, machining time, tooling or master patterns, finishing, and inspection all affect the quote. Share alternative quantities if you want to compare production options.

QUALITY YOU CAN REVIEW

Clear quality requirements.
Parts you can verify.

Agree on critical dimensions, appearance standards, and documentation before production. From design review to final inspection, we work to the same acceptance criteria you use.

LK Prototype quality inspection equipment
  1. 01

    Before production: review design and materials

    Review drawings, critical requirements, and manufacturability. Specify material certificates or special inspection needs before placing an order.

  2. 02

    During production: check the process

    Monitor machining conditions, part positioning, and critical dimensions through in-process checks matched to the project requirements.

  3. 03

    Before delivery: verify parts and documents

    Complete dimensional and visual checks, provide the agreed inspection documentation, and package parts to protect them in transit.

  4. 04

    Before sharing files: agree on confidentiality

    We can discuss an NDA before you share designs. For unreleased products or restricted files, confirm the permitted use of the information with our team first.

BUILT AROUND YOUR APPLICATION

Prototypes built for your application

Tell us where the part will be used and what you need to validate. Each application calls for a different balance of materials, features, and inspection priorities.

FROM FILE TO FINISHED PART

Start with your files and requirements

Ready with engineering files? Request a quote. Still deciding on a material or process? Discuss your validation goals with our engineers first.

01

Share files and intended use

Send 3D models, 2D drawings, quantities, and application details. Tell us whether you need to assess appearance, assembly, or function.

02

Review the process and quote

Our engineers assess materials, manufacturability, and finishing, then discuss pricing, production lead time, and inspection requirements.

03

Approve the plan for production

Once drawing revisions, quality requirements, and order details are agreed, manufacturing and in-process checks begin.

04

Inspect, pack, and deliver

We complete the agreed inspections and documentation, arrange protective packaging and shipment, and follow up on your acceptance feedback.

A clear brief makes quotes easier to compare

  • 3D files: STEP / IGES / STL
  • 2D PDF drawings with critical dimensions
  • Material, quantity, and surface finish
  • Target date, inspection, and NDA requirements
Upload Files & Request a Quote ↗

The manufacturing process, pricing, and delivery schedule are subject to engineering review and order confirmation.

LK Prototype manufacturing facility
Explore our facility through the company introduction and virtual tour.
MEET YOUR MANUFACTURING PARTNER

Your prototyping partner
in Dongguan, China

Dongguan LK Prototype Co., Ltd. supports product development and pilot production with CNC machining, vacuum casting, prototype models, low-volume parts, and surface finishing.

Company
Dongguan LK Prototype Co., Ltd. (LK Prototype)
Location
Room 801, No. 10 Min’er Road, Chang’an Town, Dongguan, Guangdong, China
Workflow
Send files → Engineering review → Confirm order → Manufacture and deliver
Clients
R&D engineers, product designers, buyers, and project managers

Explore examples before planning your part

Browse prototype and part examples, then discuss your own appearance, structural, and assembly requirements with our team.

Explore Prototypes & Parts ↗

Make better-informed process decisions

Learn the basics of processes, materials, and machining, then confirm the right approach for your drawings with an engineer.

Read Manufacturing Guides ↗

Get to know our factory and team

Explore factory updates, trade show reports, and company news as part of your supplier research.

Read Company News ↗
BEFORE YOU REQUEST A QUOTE

Prototyping & Small Batches
Frequently Asked Questions

Get practical answers on processes, pricing, lead times, and file requirements before discussing your specific parts.

When should I use prototypes during product development?

Prototypes support concept and appearance reviews, assembly checks, functional testing, and pre-production demonstrations. Define what you need to validate before choosing a material and process. Appearance models, functional prototypes, and production parts may have different requirements.

How do CNC machining and vacuum casting differ?

CNC machining removes material from metal or plastic stock and is useful when a part needs specific material properties, geometry, or fit. Vacuum casting uses a master pattern and silicone mold to produce multiple plastic-like copies. Compare material behavior, geometry, quantity, and finishing. Casting resins should not be treated as identical to injection-molding materials.

How are prototype and low-volume production quotes calculated?

Pricing depends on material, size, complexity, quantity, tolerances, finishing, tooling or master patterns, and inspection requirements. Send your drawings and specifications. If you are considering several quantities, include them so you can compare total project costs as well as unit prices.

Which file formats should I send for a quote?

We accept STEP, IGES, STL, and PDF files. Ideally, send a usable 3D model together with a 2D drawing showing critical dimensions and tolerances. If you only have an STL file, images, or a concept, we will need to confirm whether additional modeling or engineering information is required.

What is the lead time, and are rush orders possible?

Lead time depends on material, geometry, quantity, process, finishing, and inspection. Include your required arrival date and shipping destination so our team can assess the schedule and whether an expedited order is feasible. Confirm production time and transit time separately.

Can I order a single prototype or a small batch?

Yes—contact us about one-off prototypes and small production runs. CNC machining, vacuum casting, and injection molding have different setup costs. The best route depends on material, geometry, and quantity. Any master patterns, molds, or dedicated fixtures should be identified in the quote.

How do we agree on tolerances and inspection reports?

Mark critical dimensions, fit requirements, and tolerances on your drawing, and specify the inspections or report format you need. Achievable accuracy depends on material, geometry, size, and process, so it should be confirmed before ordering. Dimensional reports and material documentation can be discussed for your project.

Do you offer painting, screen printing, and anodizing?

We assess options such as sanding, painting, screen printing, bead blasting, and anodizing for the material and application. Include color, texture, or reference samples, and identify mating surfaces that must remain uncoated, along with other cosmetic acceptance criteria.

Can we arrange an NDA before sharing confidential designs?

Yes. Contact LK Prototype to discuss a non-disclosure agreement before sending design files. Specify the confidentiality scope, limits on use, and project requirements so both parties can agree before the engineering review begins.

YOUR NEXT PART STARTS HERE

Send us your design.
Plan your next part.

Share the material, quantity, application, and target delivery date.
Start with an engineering review of your prototype or low-volume manufacturing project.

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Turning Ideas into Precision Prototypes & Parts

Want to convert your CAD design into a sample prototype or small-batch production? Upload your files and get a fast and accurate quote.

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