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3D-printed prototypes · CNC prototypes
Rapid Prototyping: 3D Printing & CNC Before Tooling
Find the problems before you pay for a mold. Hongqing uses 3D-printed or CNC prototypes to check appearance, dimensions, assembly and user experience, so the design is right before tooling. Prototypes take from 10 days; mechanical design plus one 3D-printed prototype starts at USD 3,000, and once approved, the design goes straight to tooling in our own mold shop.
We'll sign an NDA before you send drawings · Or email info@dghongqing.com
Prototypes from 10 days
3D printing and CNC
Files revised after testing
Straight to tooling after approval
What a prototype checks
What one set of prototypes confirms
Changing a mold after tooling costs money and time; changing the design at prototype stage costs the least.
Form
Shape and proportions
Check shape, proportions, feel and color direction on a real part, which tells you far more than a rendering and makes it easier for buyers and retailers to decide.
Structure
Assembly and fit
Check that snap fits, screw bosses, buttons and connectors assemble properly and hold, with no interference and a practical assembly order.
Function
Electronics and user experience
Fit the PCB, battery and components for functional tests, and check wiring space, button feel and user experience.
Two prototyping methods
3D printing or CNC?
Choose the method by what you need to test; if you're not sure, send us the files and we'll advise.
Fast and low-cost
3D-printed prototypes
Good for checking appearance, fit and assembly quickly and at low cost, but not a production-grade functional sample. Mechanical design plus one set of 3D-printed prototypes from US$3,000.
Closer to molded parts
CNC prototypes
Machined from solid plastic, with strength and surface closer to molded parts. Suitable for functional tests, drop tests and show samples; quoted from your files and quantity.
Prototyping process
From files to a design ready for tooling
Test results from every prototype are recorded, and the revised files go straight into tooling.
01
File review
We check the structure and dimensions of your 3D files and agree the method, quantity and finish.
02
Prototype build
3D printing or CNC machining, with painting or silk screen printing if needed. From 10 days.
03
Testing and feedback
You and our engineers check appearance, assembly and function together and list what needs to change.
04
Revise and tool
After revising the files we start tooling in our own toolroom, with no need for another factory to re-evaluate the design.
How many rounds
When to prototype, and how many rounds
This is our advice; the decision is yours, and each round is quoted separately.
New styling or structure
At least one round for appearance and fit
When both the styling and the internal structure are new, use 3D prints to confirm appearance and fit, and fix problems on the drawing.
Products with electronics
Add a functional round
Fit the PCB, battery and buttons for functional testing; use CNC prototypes when you need strength or drop tests.
Updates and small changes
You may be able to skip it
If only dimensions or local features change, the DFM review may show you can go straight to tooling and save time.
From our factory
From prototype to mold trial on one site
3D-printed prototypes
A physical part, fast, to check appearance and assembly first.
CNC machining
Strength and surface closer to molded parts, for functional tests and show samples.
From prototype to mold trial
Once the prototype is approved we build the mold, and T1 trial samples are checked again for dimensions and fit.
Explore mold making →Have 3D files? Send them for a prototype
Our Sales Manager, Coya Xiang, replies within one business day, and we can sign an NDA first if you need one.
What's the difference between Hongqing's 3D-printed and CNC prototypes?
Hongqing's 3D-printed prototypes are fast and low-cost, good for checking appearance, dimensions, fit and assembly, but they are not production-grade functional samples. CNC prototypes are machined from solid plastic, with strength and surface finish closer to molded parts, so they suit functional tests, drop tests and show samples. Choose by what you need to verify: 3D printing for looks and assembly, CNC for function and strength. Many projects use both, confirming the design with 3D printing first and then verifying function with CNC.
How long does a prototype take, and how much does it cost?
A prototype set at Hongqing takes from 10 days, and mechanical design plus one 3D-printed prototype starts at USD 3,000 per product. Prototypes only, from complete 3D files, and CNC prototypes are quoted separately based on the files, quantity and finish; painting or silk screening affects both lead time and price. Send your 3D files (STEP, IGS, X_T or STL) with what the prototype needs to verify and how many sets you need, and we will send a written USD quote and lead time.
How many prototype rounds does a product need?
Hongqing's recommendation: a brand-new design or structure needs at least one round of 3D-printed prototypes to confirm appearance and assembly. Products with electronics need an extra functional round with the PCB, battery and buttons fitted, using CNC when strength or drop testing is required. For a product update that only changes dimensions or part of the structure, we can assess after the DFM review whether to skip the prototype and go straight to tooling. Each round is quoted and scheduled separately, and you decide how many rounds to run.
Once the prototype is approved, how soon can tooling deliver samples?
Once the prototype is approved, Hongqing starts tooling in its own mold shop, taking from 30 days. The revised files go straight to tooling, without another factory re-reviewing the design. When the mold is finished, we run trials on our 80T–1300T presses and send you T1 samples to confirm that dimensions and fit match the prototype results. Tooling starts after a 50% mold deposit, and the mold belongs to you, as stated in the contract.
Send us what you have. We'll map out the route to mass production.
Wherever you are in development, we'll propose the right manufacturing plan, from early design review through tooling and molding to finishing, assembly and shipping, and move your project step by step to mass production.
Helpful to include: sketches, drawings or 3D files, annual volume and target market.
Prototyping at a Glance
| Methods | 3D printing and CNC-machined prototypes |
|---|---|
| Validation | Appearance, structure, assembly fit, electronics layout and user experience before tooling |
| Engineering input | Concept evaluation, competitor benchmarking, structural feasibility and DFM for injection molding |
| Goal | Fewer mold revisions, lower tooling risk and a shorter path to mass production |
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