This standard is applicable to plated surfaces for all fabricated products.
Xometry’s Standard for Plated Surfaces
- Plated surfaces should be uniform, including adjacent materials of assemblies.
- Plated surfaces should be free of machining marks, scratches, abrasions, pits, protrusions, or visible bare metal.
- Some minor defects may be permissible in certain situations if they do not compromise the protective finish. Refer to the sections below for specific callouts.
When plating a surface, take care to ensure that the surface is clear of contamination and foreign object debris that may affect the quality of the surface plating. Plated surfaces should be carefully inspected before shipping part(s) to the customer. Contact Xometry’s Case Management team with any concerns by selecting “report an issue” in the portal for the job in question.
Meets Xometry's Quality Standard
This is a surface that the end customer sees. There are no inconsistencies or dis-continuances in the finish. There are no machining marks, scratches, abrasions, rainbow effects, pits, protrusions, or bare metal showing.
The rainbow effect apparent with Zinc plating is acceptable when markings do not compromise the protective finish.
The minor discoloration is acceptable when it does not compromise the protective finish.
Minor scratches are acceptable when they do not compromise the protective finish. Permissible scratches shall be less than 0.25” in length by 0.015” in width and shall not exceed more than three (3) scratches in a 10 - 20 in2 area.
Marks and runs are permitted as long as there are less than two (2) per 20 in2 areas with a max dimension of 1” in Length by 0.06” in Width.
Bleed Outs are permitted as long as they do not compromise the protective finish.
Does Not Meet Xometry's Quality Standard
Protrusions and blistering on plated surfaces are not permissible.
Grit, dust, lint, specs, or any other foreign object debris on a plated surface is not permissible.
Cracks, pits, or other surface deformities weaken the plating and are not permissible.
Tooling marks that exceed the drawing surface finish specification are not permissible. Learn more about Xometry’s standards for mill steps, tooling, and chatter here.
Fingerprints and handprints do not meet this Surface Finish Cosmetic Standard. Any fingerprints or handprints should be cleaned from the surface before shipping to the customer.
Oxidation (i.e. rust), as shown in the example above, is not permissible. Plated surfaces should be adequately protected to prevent corrosion. Corroded, rusted, or excessively oxidized plated surfaces can weaken the part surface.
Gouges and surface imperfections that penetrate plating are not acceptable. Gouges and notable surface imperfections may result in a rework.