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Quality Assurance

Our team is dedicated to ensuring the parts delivered to you consistently meet your quality expectations.

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Quality Assurance
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Nuoue manufacturing standards
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Manufacturing Partner assessment
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Quality reports & Certifications
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Design Verification Program

Nuoue manufacturing standards

CNC Machining standards

Part size Tolerance Angularity
< 300 mm (12") ± 0.125 mm (± 0.005") ± 0.5°
< 600 mm (24") ± 0.250 mm (± 0.010") ± 1.0°
< 900 mm (36") ± 0.400 mm (± 1/64") ± 1.0°
< 1500 mm (60") ± 0.8 mm (± 1/32") ± 1.0°
> 1500 mm (60") ± 1.6 mm (± 1/16") ± 1.0°

All parts are deburred. Tightest achievable tolerance is +/-0.01mm and is dependent on part geometry.

A metal part in the middle of being machined

Standard order surface finish shall be referred to as As Machined and requires a ~125 RA µin (3.2 RA µm) finish.Minor tool marks visible on the part are acceptable. All sharp edges and burrs will be removed. If any form of threads (internal or external), any non­standard tolerances or any non­standard surface finish are required, these must be clearly indicated in a technical drawing.

Threads and tolerance specifications

The purchase order will indicate whether threads or tolerances are included in an order. The Manufacturing Partner must receive a technical drawing that clearly defines the specifications for these features. Threads and tolerances must ONLY be included on a part when a technical drawing has been provided.

By accepting an order, the Manufacturing Partner indicates that they have reviewed all technical drawings and have acknowledged the presence of threads or tolerances. Nuoue is not responsible for informing the Manufacturing Partner that threads or tolerances are present.

Threads

All threads shall be cut straight and cleaned with any chips removed. All threads must be checked to confirm functionality.

Tolerances

Should tolerances tighter than those shown in Table 5.1 be required for an order will be indicated on the Purchase should be agreed upon before confirmation of the order. If a Manufacturing Partner is unable to achieve the tolerance specifications as presented on the technical drawing/s coinciding with an order, then they MUST reject the order

Surface finishes

Nuoue offers customers a number of surface finish options. Manufacturing Partners must NOT apply any surface finishes (including but not limited to sanding or grinding) without confirmation from Nuoue in the Purchase Order to do so. This does not include the removal or sharp edges or burrs. When surface finishes are required, threaded or tolerance areas must be masked so that the finish does not affect the function of the part.

For surface finishes other than As Machined the following quality standards must be met:

Bead blasting

A matte finish with a light texture and consistent surface. Bead blasting should only be used when it does not damage part geometry or features.

Anodized

An anodized Type II surface finish as per ISO 7583:2013. The surface must be smooth and consistent with no marks or scratches. Nuoue will provide the Manufacturing Partner with a Pantone or RAL color unless the finish is black or clear.

Powder coating

The surface must be smooth and consistent with no marks or scratches. Nuoue will provide the Manufacturing Partner with a Pantone or RAL color unless the finish is black.

3D Printing standards

Process Tolerance
FDM ± 0.5% with a lower limit of ± 0.5 mm (± 0.020")
SLA ± 0.5% with a lower limit of ± 0.15 mm (± 0.006")
SLS/MJF ± 0.3% with a lower limit of ± 0.3 mm (± 0.012")
Polyjet ± 0.1% with a lower limit of ± 0.1 mm (± 0.004")
DMLS ± 0.2% with a lower limit of ± 0.2 mm (± 0.008") for parts smaller than 10 mm in any dimension. ± 2% for parts over 10 mm in any dimension.

All parts are deburred. Tightest achievable tolerance is +/-0.01mm and is dependent on part geometry.

A man with a blue glove on holding 3D printed parts

The following manufacturing standards are presented below. For all 3D printing technologies, all surfaces must have a consistent visual appearance, have the support structures removed (where applicable) and will be cleaned of all excess support/build material.

Fused deposition modeling standards

  • A dimensional accuracy of ± 0.5% with a lower limit of ± 0.5 mm (± 0.020")
  • Consistent surface finish with no bumps or delamination. Marks left by retraction and layer changing are acceptable.
  • All support material must be removed such that the supported surface has a consistent finish.
  • All parts to be printed with 25% infill unless otherwise agreed with the customer.
  • All parts are to be printed with 3 outline / perimeter shells or a wall thickness of 1.2 mm.

Stereolithography/Direct laser polymerisation standards

  • A dimensional accuracy of ± 0.5% with a lower limit of ± 0.15 mm (± 0.006").
  • Parts must be fully cured to material manufacturer specifications before shipping. Parts must not be sticky or have any excess resin on the surface. Hollow sections must be drained of excess resin.
  • All support material must be removed and support nibs must be sanded smooth.

Selective laser sintering/Multi-jet fusion standards

  • A dimensional accuracy of ± 0.3% with a lower limit of ± 0.3 mm (± 0.012").
  • All excess powder must be removed from inside hollow sections and from the part surface.

Material jetting standards

  • A dimensional accuracy ± 0.1% with a lower limit of ± 0.1 mm (± 0.004")
  • All support material must be removed.

Direct laser metal sintering/Selective laser melting standards

  • A dimensional accuracy of ± 0.2% with a lower limit of ± 0.2 mm (± 0.008"), for parts smaller than 10 mm in any dimension. ± 2% for parts over 10 mm in any dimension - tolerances not guaranteed on the first attempt.

Manufacturing Partner assessment

Each of our Manufacturing Partners goes through an extensive onboarding process before being brought onto the Nuoue network, including:

1

Pre-vetting of in-house machinery, available capacity and quality management systems

2

Completing multiple test orders that are sent out to our HQ and assessed by our quality inspection team

3

Signing a Non-Disclosure Agreement with Nuoue to protect confidential information
 

4

Signing a Manufacturing Partner Agreement laying out detailed non-disclosure, confidentiality and general terms for their supply services

The performance of our Manufacturing Partners is continuously monitored by our Supply team to ensure that all orders are completed in accordance with the Nuoue Manufacturing Standards.

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Quality reports

The performance of our Manufacturing Partners is continuously monitored by our Supply team to ensure that all orders are completed in accordance with the Nuoue Manufacturing Standards.

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Standard Inspection report

Every order includes our standard inspection report, which verifies:

  • Critical dimensions (bounding box, hole diameters/locations, thicknesses and depths)
  • Quantity of parts
  • Number of parts inspected
  • Surface finish
  • Removal of sharp edges and burrs
  • Threads and tolerances
Drawn icon with arrows to indicate dimensions of part with report sheet below it
Full dimensional inspection report

This report is available for CNC machining and gives a detailed assessment of all critical dimensions including both actual dimensions and allowable tolerance:

  • Bounding box
  • Hole diameters/locations
  • Thicknesses
  • Depths

Dimensions are verified using a precision measuring instrument (caliper or gauge) and with a Coordinate Measuring Machine when required.

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Material/mill test report

This report is available for CNC machining, and includes a verification of:

  • Material heat number
  • Material grade
  • Edition year and type of specifications met
  • Material dimensions
  • Mechanical properties
  • Chemical analysis
  • Heat treatment (if applicable)
Certification for Quality Assurance

Certification

We work with a vast number of ISO 9001-certified Manufacturing Partners. ISO certifications need to be requested before placing an order. Please contact your Account Manager or sales@3dhubs.com.

Our Manufacturing Partners also have the following certifications for CNC machining:

  • ISO 14001
  • IATF 16949
  • ISO 27001

Material certifications, data sheets, and test reports are available on request.

Design Verification Program

First Article Inspection

Our Design Verification Program is a premium First Article Inspection. This is a standard procedure for all Injection Molding orders, and is available on request for CNC machining orders.

You can utilise this program to:

  • Test for fit in-house
  • Verify that our quality meets your expectations

It works as follows:

  • 2 sets of parts will be shipped to you for verification
  • Once the parts are approved, we will continue with full production

If you require any design changes, you can submit the modified models to us. Please note that any significant changes may result in an increase in price.

A leaflet of the Nuoue Design Verification Program

Nuoue offers You the possibility to use the Design Verification Program (DVP) for orders that include a minimum individual part quantity of 50 units or $5,000 USD order value. Our DVP allows You to receive two sets of pre­production samples prior to kicking off full­scale production.

Benefits

  • Quality assurance: DVP mitigates risk and ensures the parts meet Your requirements such as material, tolerances or surface finish.
  • Prototyping on bulk pricing level: DVP enables You to get your prototypes on a much more economic price.
  • Liability: Prototypes and the full order are produced by the same Manufacturing Partner.

Process

  1. You request a quote with the pricing for the total number of parts you require for the order.
  2. Nuoue reviews the quote and offers You the chance to utilise DVP.
  3. Nuoue communicates the price of the pre­production samples.
  4. You sign the quote provided by Nuoue and DVP Terms and Conditions.
  5. Our Manufacturing Partner produces two of the relevant DVP parts and sends them to You.
  6. Having received and approved the parts You inform Nuoue that full­scale production may begin. The quoted lead time applies from this moment.
  7. The same Manufacturing Partner produces the full order within the quoted lead time.
  8. The full order is delivered and You are invoiced as per the quote.

Example

You place an order with the Design Verification Program for 250 units for a part where the total price is $6,000 USD (excluding shipping, VAT, etc.) resulting in a unit price of $24. You make the 50% down payment as the order value is above $5,000 USD. The cost of the part for quantity 2 is $210 USD. The Manufacturing Partner produces the pre­production samples and ships them to You. Once You have received the parts there are two possible outcomes:

  1. You approve the pre­production samples and inform Nuoue that full scale production can begin. You receive the remaining parts and invoice for the second half of the payment.
  2. Reviewing the samples You decide to do some design changes. By changing the design, Nuoue provides the quote for the updated parts. You must pay for the cost of purchasing the pre­production samples, namely $210 USD. The DVP procedure will be repeated.
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Resolving quality issues

Should your order not meet specifications, you will be able to raise any issues within 5 business days of receiving your parts. Our order fulfillment team will resolve these issues as quickly as possible, typically within 1-3 business days.