64210 2025 eng 1 14 4 37 article American Institute of Physics Publishing New York 0 -- -- -- Data-driven quality assurance and reproducibility are critical for advancing the industrial maturity of Powder Bed Fusion with Laser Beam of Metals (PBF-LB/M). This study addresses the extraneous variance in scan vectors that arises even for identical cross sections of nominally identical components but located at different positions on the build platform. This inherent variance, common across most PBF-LB/M machines, is caused by scan vector computation relative to the machine coordinate origin and subsequent projection of the resulting pattern onto individual component cross sections. In this work, scan vectors are computed still following conventional slicing, but relative to the workpiece origin of each component, using an EOS M 300-4. This digital preprocessing approach homogenizes fabrication conditions, ensuring that anomalies, such as scan vector overlaps, occur consistently across identical components. The impact during fabrication is assessed through powder bed imaging, melt pool monitoring, and operational data from the multilaser PBF-LB/M machine. Components are manufactured from AlSi10Mg for each scan vector computation origin and subsequently qualified using x-ray computed tomography, optical coordinate measurement, and optical surface measurement. A comprehensive evaluation is conducted, comparing the results in terms of component density, geometric accuracy, and surface roughness to those obtained using conventional preprocessing. Based on these findings, practical recommendations are provided, focusing on achieved quality criteria to identify potential drawbacks, while also considering the life cycle analysis of fabrication. Finally, the study emphasizes the significance of consistent scan vector provisioning for identical components placed at different build platform positions, assuming no roll or pitch during nesting. Journal of Laser Applications 1042-346X 10.2351/7.0001890 urn:nbn:de:kobv:b43-642104 true journal-article https://creativecommons.org/licenses/by/4.0/ crossref ICALEO Orlando, FL, USA 13.10.2025 16.10.2025 doi-import Creative Commons - CC BY - Namensnennung 4.0 International Konstantin Poka Sozol Ali Alexander Ulbricht Jakob Schröder Jiganesh Khambayat Maik Scholz Waleed Saeed Benjamin Merz Martin Epperlein Kai Hilgenberg eng uncontrolled Quality assurance eng uncontrolled Data management eng uncontrolled 3D printing eng uncontrolled Laser fabrication eng uncontrolled Life cycle analysis Ingenieurwissenschaften und zugeordnete Tätigkeiten 8 Zerstörungsfreie Prüfung 8.5 Röntgenbildgebung 9 Komponentensicherheit Material Verlagsliteratur Datei im Netzwerk der BAM verfügbar ("Closed Access") Wissenschaftliche Artikel der BAM 9.6 Additive Fertigung metallischer Komponenten Additive Fertigung Bundesanstalt für Materialforschung und -prüfung (BAM) https://opus4.kobv.de/opus4-bam/files/64210/Reduction_of_extraneous_variance_in_PBF_LB_M_M_by_means_of_advanced_digital_pre_processing.pdf