Uncompromising Quality at GS Proto

Our advanced manufacturing, strict quality control, and industry-standard compliance guarantee high-quality, precise, and durable prototypes and production parts.

Quality Assurance Overview

Our team has developed a rigorous quality control process to uphold the highest manufacturing standards for every custom part.

20+ Inspection Tools – Ensuring precision with advanced measurement equipment.
Comprehensive Dimensional Checks – Utilizing 2D & 3D CMMs, calipers, micrometers, and more.
Multi-Stage Quality Control – Inspections at critical production phases for consistency.
Surface & Finish Testing – Roughness testers and visual checks for optimal quality.

This ensures your components meet exact specifications and are delivered on time—because precision is our priority.

ISO Certifications

Due to our strictly reviewed ISO-certified quality management system, the parts you manufacture are always guaranteed to meet industry-specific certifications. Our factory is certified to ISO 9001, ISO 13485, ISO 16949, and ISO 14001, and we are also registered by D-U-N-S®.

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Quality Assurance Process

Explore each step of our quality inspection process. We are committed to providing you with the best quality control services to ensure your product’s excellence.

Pre-Production Assessment

Our engineering team evaluates your design, including materials, surface finish, and process. Material certification is provided on request, detailing grade and properties.

In-Production

An automated inspection system ensures precise part positioning, while our quality team conducts inspections every 2 hours to maintain production accuracy.

Final Inspection & Packaging

We provide a full-dimensional inspection report, and parts are securely packaged with four layers of protection for safe delivery.

Our Quality Inspection Equipment

Our advanced inspection equipment ensures every part meets the highest precision standards. From CMM to optical measurement, we guarantee accuracy at every step.

Comprehensive Quality Inspection Tools

Quality Inspection	Method	Tools/Equipment	Notes
Appearance	Visual Inspection	–	–
Dimensions	Tape Measure, Digital Caliper	–	–
Material	Internal Spectrometer (Outsourced SGS Inspection for some)	–	–
First Article Inspection	Inspect appearance, dimensions, and structure based on drawings	Digital Calipers, 2D CMM, Zeiss CMM, Height Gauge, Inside/Outside Micrometers, Surface Roughness Tester, Thread Gauge, Pin Gauge, Rockwell Hardness Tester, Vickers Hardness Tester, Coating Thickness Gauge, Spectrometer	Based on product specifications, different tools required
Sampling Inspection	Random sampling by time and quantity	Digital Calipers, 2D CMM, Zeiss CMM, Height Gauge, Inside/Outside Micrometers, Surface Roughness Tester, Thread Gauge, Pin Gauge, Rockwell Hardness Tester, Vickers Hardness Tester, Coating Thickness Gauge, Spectrometer	Based on product specifications, different tools required
Full Quantity Inspection	Inspect all parts based on drawings and checklist	Digital Calipers, 2D CMM, Zeiss CMM, Height Gauge, Inside/Outside Micrometers, Surface Roughness Tester, Thread Gauge, Pin Gauge, Rockwell Hardness Tester, Vickers Hardness Tester, Coating Thickness Gauge, Spectrometer	Based on product specifications, different tools required

Customer Feedback

Hear directly from our clients about their experience with GS Proto. We are committed to providing top-quality solutions for every project

On-time and precise!

"GS Proto delivered our parts exactly as we needed and on time. Their attention to detail is unmatched!"

MichaelAerospace Engineer

Quality Matters

"The team at GS Proto went above and beyond to ensure the quality of our components. Highly recommend!"

SarahAutomotive Designer

The best partner

"Excellent service and top-notch quality control. GS Proto is our go-to partner for custom manufacturing."

JamesMedical Device Manufacturer

Great Experience

"From start to finish, the experience with GS Proto was seamless. Their commitment to precision is evident in the final product."

RachelElectronics Engineer

“As the CEO of GS Proto, I want to thank our valued clients for their trust and partnership. We are dedicated to providing the highest quality, precision, and service in everything we do. Together, we are building a future of innovation and excellence.”

Leo Liao

Start With a Free Project Review

Ready to enhance your parts with superior surface finishes? Contact us today to get started on your project!

FAQs

What industries commonly use CNC machining?

CNC machining is widely used in aerospace, automotive, medical devices, electronics, and industrial equipment manufacturing.

What are CNC machining services?

CNC machining services are companies, businesses, that specializes in rendering CNC machining to clients.

These businesses also known as custom CNC machining service can make custom parts based on a design made the client or them.

They render CNC milling, drilling, turning, lathing, etc., to clients providing an efficient way to make products at a competitive prices for industries such as automotive, electronics, aerospace, etc.

What tolerances can CNC machining achieve?

CNC machining can achieve a tolerance as low as ±0.0004 inches (0.01 mm).

However, the tolernace depends on the CNC machine sophistication, material machinability, and part complexity.

CNC machining high tolerance makes it a great option for parts that requires high precision especially those used in the aerospace, automotive, or medical part manufacturing industries..

How does CNC machining compare to 3D printing?

CNC machining and 3D printing are custom manufacturing processes. However, they differ in several ways

In terms of suitability for complex parts, 3D printing additive manufacturing mechanism makes it a better option than CNC machining. However, this does not mean that CNC machining is incompatible with complex materials.

However, in terms of precision and material compatibility, CNC machining has an advantage over 3D printing. It is more accurate and compatible with metals, plastics, ceramics, etc.

The basic difference between CNC machining and 3D printing is their mechanism of action. CNC machining uses a subtractive manufacturing model while 3D printing uses an additive manufacturing model.

Is CNC cutting expensive?

The cost CNC cutting depends on the project and its requirements. For high volume CNC machining operations, the cost per unit parts reduces. Other factors that can affect the overall cost of CNC cutting include the material and part complexity.

How long does it take to manufacture CNC parts?

You can get a CNC machined parts in as fast as 1 day. However, the lead time also depends on its complexity, size, and the capability of the machine/CNC machining service.

What surface finishes are available for CNC machined parts?

CNC machined parts comes with the as-machined surface finish, but are compatible with many surface finishing options.

The choice of surface finish options include but is not limited to powder coating, polishing, painting, anodizing, or bead blasting.

However choosing any of them depends on the material compatibility and the reason for the surface finish.

Each surface finish has its advantages whether it improves the materials functional and or aesthetics properties. You should choose a surface finish option that adheres to the project requirement.

How can CNC machining services be customized for my project?

The basics of CNC machining services is customization hence the reason why they are called custom CNC machining services.

Custom CNC machining services can customize your project by adjusting the material, size, shape, and surface finish so that the machined part meets your requirements.

What is Design for Manufacturing (DFM) in CNC machining?

Design for Manufacturing CNC machining can be simply defined as checking a part so that it is manufacturable at the highest efficiency.

CNC machining services invests heavily in Design for manufacturing because of its focus. DfM focuses on ease of machining, cost-effectiveness, and efficient manufacturing process. As a result, part manufacturers can avoid issues during production.

Can you work with my existing design files for CNC machining?

Yes, GS-Proto can work with your existing design files for CNC machining.However, the files must be in the right format such as CAD, DXF, or STL.

Send the files and our team will work with you to create parts using that design such that they meet your specifications and quality standards.