Our Manufacturing Standards

Orders with Xometry will meet the minimum workmanship standards outlined below (as applicable to the process). If your project requires a level of workmanship that goes beyond the standards listed below, please clearly list the requirement in your engineering drawings, purchase orders, or specifications. 

Finished Surfaces Cosmetics

• Paint coverage on surfaces will be uniform, including adjacent materials of assemblies.
• Finished surfaces will be free of defects, including chips, scrapes, or other damage.
• Parts made with Sheet Cutting and Sheet Metal Fabrication have different cosmetics standards. Please see their sections below for details.

Mill Steps, Tooling, and Chatter

• Tool marks on as-milled surfaces will be free of defects, including burrs, chatter, tool gauges, and will meet surface roughness specifications.
• Indicated critical surfaces will be free of mill steps and marks across the entire surface. 
• Milled surfaces will meet surface roughness specifications. 

Chips, Burrs, and Sharp Edges

• All exposed edges will be free of burrs, sharp edges, and metal slivers.*
• *Parts made with Sheet Cutting are not deburred unless specified through a selected finish.

Foreign Object Debris (FOD) 

• Surfaces will be free of cutting fluid, metal chips, foreign objects, and other debris.

Threads

• Threads will be fully formed and cut to specified size and class indicated in provided drawings.
• Threads will be free of defects, notable damage, and contamination. 

Plated Surfaces

• Plated surfaces will be uniform, including adjacent surfaces of assemblies. 
• Plated surfaces will be free of machining marks, scratches, pits, protrusions, or visible bare metal. 
• Some minor defects may be permissible in certain situations if they do not compromise the protective finish.

Weld Joints

• Weld joints are performed as indicated in the customer-provided drawing.
• Welds without specific requirements are cleaned to remove slag or other surface contamination. 
• Weld joints will not be painted until the welding has been completed and the weld has passed inspection. 

Countersinks

• Countersinks shall be round and made to print specifications and allow the proper designed fit with the mating screw. 
• Countersinks will be free of burrs, chatter, or other tooling defects. 

Painted Surfaces

• Painted surfaces shall be consistent and continuous in the finish.  
• Painted surfaces shall be free of visible machining marks, scratches, abrasions, dust particles, fisheyes, orange peel, or bare metal. 
• Painted surfaces should be reviewed against this standard at a distance of 18" at 1X magnification. 

Supported Surfaces (Additive Manufacturing / 3D Printing)

• Unless otherwise specified, Xometry or Xometry Partner additive manufacturing technicians will determine the part's support orientation to best accommodate product design, cost, and the mitigation of support structures.
• Processes that require supporting structures may leave small vestiges on the part where the supports were attached.
• Depending on the process, support vestiges can be mitigated with secondary processes, such as sanding.

• Typical mold machined tolerances are +/- .010" when machining the mold and an additional +/- .001" per in. when calculating shrink rate.
• Tighter as-molded tolerances can be requested and may increase the cost of tooling. Additionally, many tight tolerances require the mold to be manufactured, sampled, and groomed. Xometry will mill to a steel-safe condition on critical features.
• Critical toleranced features and surface finishes may require post-machining and should be noted in the quote prior to order. Post-machined features will follow Xometry’s CNC manufacturing standards.
• Xometry will produce die cast components according to the net-shape (as-cast) model provided by the customer. These models must contain appropriate material for any additional post-processing efforts, such as post-machining. It is recommended to provide the as-cast 3D model as well as the final model with any accompanying technical drawings.
• Part-to-part repeatability is typically under +/- .004".
• As-cast surface finish is typically 64 μin. The standard finish for die-casting is as-cast and cannot guarantee a specific Ra value without additional processing.
• The lead time is for the first article shipment (T1 shipment). The remaining production time is confirmed after the first article approval.
• Typical first article shipments are five pieces but may vary based on size, origin, and material.
• All quotes are based upon the assumption that designs have an adequate draft, radii, and coring for manufacturability.
• Cores, side actions, and tooling strategy are determined by Xometry unless explicitly discussed.
• Gating, ejection, knit lines, and parting lines are at the discretion of Xometry unless explicitly discussed.
• Parting line(s) on die cast parts will be visible as a thin ridge traveling across the part.
• Cast parts may have one or many gate vestiges, which are trimmed, sheared, or ground off.
• Ejector pin marks will be present on die cast parts, resembling round flats.

• All quotes are based upon the assumption that designs have adequate wall thicknesses, radii, and feature sets designed for manufacturability in this process.
• Critical-to-function tolerances should be discussed at the time of quoting to ensure that tooling strategy, check gages (if applicable), and other quality controls are encompassed in the quote.
• Linear cross-section dimensions are +/- .010", or +/- .006” per inch, whichever is greater, excluding wall thickness.
• Wall thickness is +/- 10% of the specified dimension.
• Cross-section angularity for external corners is +/- 1 degree, and +/- 2 degrees for internal angles.
• Critical toleranced features and surface finishes may require post-machining and should be noted in the quote before order. Post-machined features will follow Xometry’s CNC manufacturing standards.
• Customer-provided models must contain appropriate material for additional post-processing efforts, such as post-machining. Xometry recommends providing the extruded 3D and final models with any accompanying technical drawings.
• The surface roughness of as-extruded features is 125 μin Ra.
• Twist not to exceed 0.5 degrees per 12” length is typical.
• Straightness not to exceed .0125” per 12” length.
• Sharp corners will have a radius of at least .016”.
• Corner radii up to .188” will have a +/- .016” standard tolerance. Any radii over .188” will have a +/- 10% tolerance.