Inspection & Sampling Plan

Inspections

We offer (6) different inspection options on the Inspection & Notes/Drawings tab in the quoting platform. All machined and sheet metal parts will receive a standard inspection included in the part price and lead time. All inspection options are described below including example dimensional inspection reports.

Standard: QC will verify that the part material, features, and finish are in accordance with the part requirements specified in the quote, CAD file, and/or print. If no dimensional print is provided with a part, QC measures to Xometry's Manufacturing Standards on dimensions they deem critical, such as overall size, holes, and depths. The inspection will be in-process. Documentation will not be shipped with your parts.

Standard With Dimensional Report: QC will perform an inspection using calibrated tools where 100% of all dimensions, attributes, dimensional locations, and print notes will be documented per our Statistical Sampling Plan based on ASQC Z1.4 2008 Level II with Zero rejects. A dimensional inspection report with a correlated ballooned print will be shipped with your part(s). A customer-supplied dimensional print is required for this inspection. Figure 1 shows an example of a Xometry dimensional inspection report with a correlated ballooned print.

CMM Inspection With Dimensional Report: QC will perform an inspection using a Coordinate Measurement Machine (CMM) where 100% of all dimensions, attributes, dimensional locations and print notes will be documented per our Statistical Sampling Plan based on ASQC Z1.4 2008 Level II with Zero rejects. A dimensional report with a correlated ballooned print will be shipped with your part(s). A customer-supplied dimensional print is required for this inspection. Figure 1 shows an example of a Xometry dimensional inspection report with a correlated ballooned print.

First Article Inspection Report (per AS9102): QC will perform a First Article Inspection per the requirements specified in SAE Aerospace Standard (AS 9102) documentation. The purpose of the First Article Inspection is to provide objective evidence that all engineering design and specification requirements are properly understood, accounted for, verified, and documented. QC will maintain a quality record for customer review of accountability and planning, for performing periodic surveillance and audits to verify conformance, for evaluating root cause and corrective action for any non-conformances, and for problem investigations. A dimensional report with a correlated ballooned print will be shipped with your part(s). Random sampling is based on ANSI/ASQ Z1.4 Level II to an Acceptance Quality Level (AQL) of 1.0%. A customer-specified dimensional print is required for a First Article Inspection.  We will build the full lot and do the FAI form at final QC treating this lot as the first Article.  If you want a 1 part and stop for approval please select custom inspection.

Source Inspection: A Source Inspection audit is an inspection of purchased products and process records at the supplier's premises to verify compliance with requirements before shipment to the customer. A Source Inspection can include but is not limited to requirements review, specification compliance, and a quality review of the manufacturer. A source inspection will be scheduled based on the order lead time and when parts are ready to ship. The order will ship after the source inspection is complete.

Custom: Choose this option if your part requires custom inspection requirements such as, but not limited to, the following: Non-Destructive Testing, Serialization, Custom Sampling Plan, or if you would like to provide your own inspection datasheet.

Non-Conformances & Rejected Parts
Rejected or non-conforming parts are documented and communicated based upon the inspection type selected. For Standard Inspections and Standard Plus Dimensional Inspections, Xometry may ship parts found with minor non-conformances (that cannot be reworked into compliance and are assumed to not impact the fit, form, or function of the part) for customer review. For other inspection types and any order where a Certificate of Conformance is selected, Xometry will acquire customer disposition on non-conformances for all issues that cannot be reworked into compliance prior to shipping. Post delivery non-conformance communication or RMA requests should be documented with the Order ID, part ID, quantity, and detailed description and sent to support@xometry.com.

Figure 1. Xometry Sample Dimensional Inspection Report

3D printed parts do not receive full measurement inspection due to natural deviations that occur within the process. Please consult Xometry's Design Guides for a better understanding of each process and expected outcomes. Some materials, such as SLS, may have accessible holes drilled open to the CAD model before shipping.

Sampling Plan

Our Statistical Sampling Plan is based on ASQC Z1.4 2008 Level II with Zero rejects as shown in Table 1.

Table 1. Xometry Statistical Sampling Plan

*Zero rejects allowed