SLS quality control connects the accepted part requirements with the material, build process and inspection evidence. It starts before printing and continues through powder removal, finishing and release.
Define what the customer requires and which checks establish acceptance. A successful print cycle alone does not show that every part is ready to ship.
Establish the part requirements
Confirm the revision, material, finish and quantity. Identify critical dimensions and any agreed functional or material tests. Record the method and acceptance criteria before production starts so the work can be planned consistently.
Avoid treating one generic tolerance or test as suitable for every part. The inspection plan needs to reflect the actual geometry, application and customer agreement.
Keep material handling traceable
Follow the material and equipment supplier's procedures for storage, preparation and powder reuse. Record the information needed to understand which material preparation was used for the build.
Refresh requirements vary by material and system. Formlabs' powder-selection guidance illustrates that different powders can require different handling and refresh choices. Its print-failure guidance also treats refresh rate as a factor to review. Use the applicable supplier procedure rather than applying one value to all SLS production.
Preserve the build context
Keep the accepted files and relevant production instructions identifiable. Record deviations and changes so the team can interpret an unexpected result later. If monitoring data is available from the equipment, define where it is retained and what decisions it supports.
A workflow platform should not be assumed to inspect each layer or correct machine settings automatically. Verify those capabilities separately with the equipment and monitoring providers if they are part of your requirements.
Inspect at the relevant stage
Visual checks, dimensional measurement and functional tests answer different questions. Choose methods appropriate to the requirement, and perform final acceptance checks after the operations that could affect the delivered result.
Record the part and revision, build or production run, inspected feature, method, result and release decision. Where sampling is used, define the sampling policy through the applicable quality process rather than assuming that one successful measurement proves every unit acceptable.
Handle rejected units explicitly
Keep rejected or held parts distinguishable from accepted output. Record the reason and decide whether the disposition is rework, replacement, scrap or customer review. Make the outstanding customer quantity visible throughout that decision.
Phasio's scrap and trace guide explains its operational movement and scrap records. The powder-bed workflow example shows how inspection can be included in a route. These functions coordinate work around the quality decision; the appropriate inspection equipment and qualified team establish physical acceptance.
Review repeated failures using the material and build records, investigate the cause and validate corrective changes. Keep the resulting instructions with the manufacturing specification so the next run benefits from the lesson.
Explore Phasio production management for connecting these operational records with the orders they fulfill.
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