Validate your design before you commit to tooling
From a single CNC-machined part to a 20-piece pre-production sample run — XJHMFG helps overseas buyers verify fit, function and appearance in as little as 24 hours, with a free DFM (Design for Manufacturability) review on every request.
One sample run is cheaper than one wrong mold
Steel tooling is a multi-thousand-dollar commitment. Before we cut a single cavity, our engineering team can produce a functional or cosmetic prototype in your chosen material family — so you confirm dimensions, wall thickness, snap-fits and surface finish while changes still cost almost nothing.
Every prototype order includes a written DFM report flagging draft angle, wall thickness and undercut issues that would otherwise surface — expensively — after the mold is already cut. This is the same review our tooling engineers use before quoting mass production.
Samples are shipped with a short dimensional inspection summary, and where relevant, the same resin grade and colorant used in production, so mechanical and cosmetic properties translate directly to your final part.
5 Prototyping & Sample-Making Routes
Each method trades off cost, lead time and how closely the part behaves like final production plastic. We recommend the right one after reviewing your file — free of charge.
Milled directly from solid engineering-grade resin (ABS, PC, POM, Nylon) or aluminum. Closest match to real material properties — ideal for fit and function testing.
High-resolution resin printing for smooth cosmetic surfaces, fine detail and quick fit checks. Best for presentation models and early-stage design reviews.
Durable nylon (PA) parts with no support marks, good for snap-fits, hinges and thin-wall enclosures that need to survive real handling and assembly testing.
A master pattern casts 10-30 near-production parts in polyurethane resins that mimic ABS, PP or rubber-like TPE — economical for pilot runs and market testing.
A soft aluminum mold, injection molded in your actual production resin — the final checkpoint before cutting hardened steel tooling for full-scale production.
Send your 2D drawing or 3D file (STEP/IGES/STL) and target use — our engineers reply within 24 hours with the most cost-effective route and a firm quote.
Upload File & Ask →Prototyping Method Comparison
A quick reference for choosing between speed, material accuracy and quantity.
| Method | Lead Time | Cost Level | Qty Range | Material Accuracy | Best For |
|---|---|---|---|---|---|
| CNC Machined | 24-48h | $$ | 1-5 pcs | Actual resin — highest | Fit & function testing |
| SLA 3D Printing | 24-36h | $ | 1-10 pcs | Resin analog — cosmetic | Design review, presentation models |
| SLS Nylon Printing | 48-72h | $$ | 1-15 pcs | Nylon analog — durable | Snap-fits, hinges, enclosures |
| Silicone Vacuum Casting | 5-7 days | $$ | 10-30 pcs | Close resin analog | Pilot runs, market testing |
| Rapid Aluminum Tooling | 10-15 days | $$$ | 50-500 pcs | Actual production resin | Final check before steel mold |
From File to Sample in 6 Steps
The same workflow whether you need one machined block or a 20-piece pilot batch.
Submit Your File & Requirements
Send STEP/IGES/STL/2D drawing plus material, color and intended use (visual check, functional test, or pilot batch).
Same dayFree DFM Review
Our engineers flag wall thickness, draft angle, undercut and tolerance risks before any part is made — no charge, no obligation.
Within 24hMethod & Material Recommendation
We recommend the fastest, most cost-effective method for your goal and send a firm quote with lead time.
Within 24hSample Production
Parts are machined, printed or cast in-house — no outsourcing, so your file never leaves our factory floor.
24h – 15 daysInspection & Report
Key dimensions are checked against your drawing; a short inspection summary ships with the parts.
Before shippingShip — or Move to Mass Production
Approve the sample and we carry the same file, material and finish straight into mold design and tooling.
DHL / FedEx / UPSPrototyping & Sample Inspection
Sample-Ready Materials
Stocked in small quantities specifically for prototyping — no minimum resin order required.
Prototype & Sample FAQ
CNC and 3D-printed prototypes are charged at cost (typically $15-80 per part depending on size and complexity), since they use real machine time and material. For simple existing catalog products, a free sample may be available — ask when you inquire.
CNC-machined prototypes use the actual target resin, so mechanical properties match closely. 3D-printed prototypes use an analog material — close in look and feel, but we'll flag any property that differs before you approve it for testing.
STEP, IGES and STL for 3D models; PDF or DWG for 2D drawings with GD&T. No file yet? We can also work from a physical reference sample or detailed sketch.
Yes — bead blasting, painting, silk-screening, pad printing and Pantone color matching are all available on prototype parts, at an additional cost quoted with your sample order.
Once your sample is approved, the same engineering file and DFM notes carry directly into mold design — see our Mold Design & Manufacturing page for the next step.
No — we accept single-piece prototype orders. Silicone casting and rapid tooling naturally involve slightly larger batches (10+ pcs) due to the tooling setup involved.
Get your prototype quote within 24 hours
Upload your file, tell us the intended use — we'll recommend the fastest route and a firm price.
