# Custom CNC Machining Services: Milling & Turning

## Precision CNC Milling and Turning at Global Scale

## **Precision CNC Machining Services For Prototypes and Production**

Trustbridge delivers precision CNC machining services through our global network of certified and highly vetted manufacturing partners. Whether you need rapid prototypes, small-batch production, or full-scale part runs, we match your exact technical requirements to the right supplier — based on capabilities, certifications, location, and lead time. From simple brackets to complex 5-axis parts, our platform gives you access to the full range of CNC milling and turning technologies, coupled with in-house engineering support to ensure your parts meet spec the first time — and every time. Trustbridge is your smarter sourcing solution for tight tolerances, high-performance materials, and scalable production.

## Technical Specifications & Tolerances

Our partners routinely achieve industry-standard and tight-tolerance CNC specs:

|     |     |     |
| --- | --- | --- |
| Feature | Standard Spec | Precision Spec |
| Dimensional Tolerance | ±0.005" (0.127mm) | ±0.001" (0.025mm) |
| Surface Finish | As-Milled (125 Ra) | Smoothed (32 Ra) / Polished (16 Ra) |
| Max Part Size | 20" x 20" x 12" | Custom Large Format Available |
| Threads & Holes | Standard UNC/Metric | Helicoil Inserts / Custom Threads |

## **Material Capabilities for CNC**

Our CNC machining network offers a broad range of material capabilities:

- **Metals**  
  - Aluminum: 6061-T6, 7075-T6, 2024 (Best for aerospace & prototypes).  
  - Stainless Steel: 303, 304, 316, 17-4 PH (Corrosion resistant).  
  - Alloy Steel: 1018, 4140, A36 (High strength industrial parts).  
  - Engineering Plastics: Delrin (Acetal), PEEK, Nylon 6/6, Polycarbonate.  
  - Titanium: Grade 5 (Ti-6Al-4V) for medical/aerospace applications.
- **Plastics**  
  - Acetal (Delrin)  
  - Nylon  
  - PEEK  
  - PTFE (Teflon)  
  - ABS, PVC, Polycarbonate
- **Others**  
  - Carbon-fiber-reinforced composites  
  - G10, FR4  
  - UHMW, HDPE

Need help selecting the right material? Our engineers will guide you based on your part’s performance, finish, and cost requirements.

## CNC Technologies & Equipment

We support a wide range of CNC machining technologies:

- **3-Axis Milling** – Ideal for simple part geometries
- **4-Axis and 5-Axis Milling** – Complex geometries, tight tolerances, high-speed
- **CNC Turning / Lathe Work** – For cylindrical parts and concentric operations
- **Mill-Turn Capabilities** – Combined setups for high efficiency
- **Swiss Screw Machining** – Ideal for small, high-precision parts
- **EDM (Electrical Discharge Machining)** – For hard metals and intricate internal cuts

Many of our partners run high-end machines from Haas, Mazak, DMG Mori, Okuma, and more.

## **Industries We Serve**

Our CNC machining network serves companies in:

- Aerospace & Defense
- Automotive & EV
- Medical Devices & Dental
- Industrial Equipment
- Robotics & Automation
- Consumer Electronics
- Oil & Gas

We understand the engineering and regulatory nuances unique to each industry.

## Vetted CNC Machine Shop Network

Access a global network of ISO 9001:2015 certified and ITAR registered machine shops. We match your project to the right facility—whether you need a local USA machine shop for rapid turnaround or an international partner for low-cost volume production.

Trustbridge gives you instant access to:

- **450+ CNC machining shops** across North America, Europe, and Asia
- **60% of suppliers** ISO 9001 certified; many with AS9100 and ITAR registration
- **Global reach, local speed** — with U.S.-based suppliers in 20+ cities
- **10+ years of average shop experience**
- **Performance-tracked partners** based on quality, responsiveness, and on-time delivery

We do the supplier due diligence so you don’t have to.

## **Case Study Highlight**

> > **Customer:** Industrial Automation OEM  
> > **Service:** CNC Milling & Turning  
> > **Challenge:** 150-part prototype batch in 7 unique SKUs; tight 0.001” tolerances  
> > **Solution:** Matched to a U.S.-based 5-axis machine shop with proven track record  
> > **Result:** All parts delivered in 5 business days; passed QC with zero deviations  
> > “Trustbridge delivered exactly what we needed — precision, speed, and engineering oversight. Our go-to partner for CNC projects.”  
> > — _Lead Mechanical Engineer, Industrial Automation Company_

### Frequently Asked Questions

##### What files do you accept?

We accept STEP, IGES, SLDPRT, STL, and DXF files, along with 2D drawings (PDF) for tolerances and finishes.

##### What’s your standard turnaround time?

Typically 3–5 business days for smaller orders, with expedited options available in major metro areas.

##### Can I request a custom surface finish?

Yes — we support bead blasting, anodizing, powder coating, polishing, and more.

##### Are my designs secure?

Yes — Work is done under NDA by default.  All files shared via Trustbridge are encrypted. While all suppliers have been vetted for reasonable file security protocols, engage with them to confirm.

## **Why Work With Trustbridge?**

> **Best-Fit Supplier Matching — Without the Hassle**  
> We combine AI + human expertise to match your project with the right supplier the first time — based on process, material, geography, certifications, and lead time.  
> **Direct Supplier Access with Engineering Oversight**  
> You work directly with the manufacturer — no black box. Our team ensures every manufacturing request is thoughtfully matched to a supplier aligned with your goals.  
> **Transparent Quality, Tailored to Your Needs**  
> From high-spec aerospace shops to agile local job shops, you choose the supplier that matches your budget and quality requirements — no guessing, no blind handoffs.  
> **No Middleman Markups — Save 30–50%**  
> Our lean model avoids redundant layers. You pay the supplier, not a broker. We add value through smart matching and light-touch oversight — not costly overhead.  
> **Global Network, Local Confidence**  
> Work with top suppliers across North America, Europe, or Asia — all vetted and performance-tracked. Get the reach you need with the transparency you deserve.  
> **Optional Payment Streamlining**  
> Only want a single payee added to your supplier list? We can handle payments and provide additional consultative support as needed.

## Explore Related Services

#### 3D Printing

Rapid, cost-effective prototyping and low-volume production with complex geometries and minimal tooling.

#### Sheet Metal Fabrication  
Cut, bend, and assemble custom enclosures, brackets, and panels — scalable from prototypes to full production runs.

#### Injection Molding  
High-volume plastic part production with consistent quality, fast cycle times, and low per-unit cost once tooled.