{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,3]],"date-time":"2026-08-03T08:46:05Z","timestamp":1785746765190,"version":"3.56.0"},"reference-count":50,"publisher":"MDPI AG","issue":"15","license":[{"start":{"date-parts":[[2026,8,1]],"date-time":"2026-08-01T00:00:00Z","timestamp":1785542400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>This study addresses the influence of process conditions on the dimensional accuracy, geometric deviations, and surface quality of PLA parts manufactured using high-dynamics material extrusion (MEX) technology. The aim was to identify the dominant sources of variability and to assess within-condition manufacturing consistency and inter-machine consistency. The investigation considered two 3D printers, nine build locations on the working platform, two printing strategies (layer-by-layer and model-by-model), and model face orientation. Additionally, an exploratory comparison of aligned and random seam configurations and an analysis of local temperature variations within the build chamber were performed. Regular dodecahedron geometries were manufactured using a Bambu Lab P1S system and processed under identical high-quality printing parameters. Dimensional measurements were performed using a Linear 100 universal length measuring machine, while full-field geometric deviations were acquired using a GOM Scan 1 structured-light 3D scanner. Surface roughness (Ra) was measured with a MarSurf XR 20 profilometer. Part orientation is the dominant source of dimensional variability, representing the largest relative contribution to linear deviation in the mixed-effects model (\u0394R2 = 0.776), while local temperature variations near the printing zone were associated with location-dependent dimensional deviations. Within the supplementary temperature dataset, the regression model including temperature and printers explained 66% of the variability in mean linear dimension. This association provides indirect evidence of a thermal contribution but does not establish direct causality. The layer-by-layer strategy provided better dimensional stability than the model-by-model approach. In the exploratory seam comparison, seam configuration did not explain the orientation-dependent LD pattern. Surface roughness variability was primarily geometry-driven (\u0394R2 = 0.852). Variability between independent manufacturing series and specimens for linear deviation and Ra was low after accounting for the investigated factors, indicating consistent process performance under constant settings; however, the present design did not allow measurement repeatability and reproducibility to be separated. In conclusion, dimensional accuracy in high-dynamics MEX is strongly associated with part orientation, while thermal variations may represent an additional contributing factor; however, the observed correlation between thermal conditions and dimensional variability does not establish direct causality.<\/jats:p>","DOI":"10.3390\/ma19153255","type":"journal-article","created":{"date-parts":[[2026,8,3]],"date-time":"2026-08-03T08:04:59Z","timestamp":1785744299000},"page":"3255","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Metrological Evaluation of Dimensional and Surface Roughness of Thermoplastic PLA Parts in High-Speed MEX 3D Printing Using a Dodecahedron Benchmark Geometry"],"prefix":"10.3390","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0642-3958","authenticated-orcid":false,"given":"Anna","family":"Bazan","sequence":"first","affiliation":[{"name":"Department of Manufacturing Techniques and Automation, Rzesz\u00f3w University of Technology, 35-959 Rzesz\u00f3w, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5926-4815","authenticated-orcid":false,"given":"Pawe\u0142","family":"Turek","sequence":"additional","affiliation":[{"name":"Department of Manufacturing Techniques and Automation, Rzesz\u00f3w University of Technology, 35-959 Rzesz\u00f3w, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8529-0884","authenticated-orcid":false,"given":"Pawe\u0142","family":"Kubik","sequence":"additional","affiliation":[{"name":"Department of Manufacturing Techniques and Automation, Rzesz\u00f3w University of Technology, 35-959 Rzesz\u00f3w, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,8,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Tao, Q., Fu, B., and Zhong, F. (2025). A Review of Challenges and Future Perspectives for High-Speed Material Extrusion Technology. Appl. Sci., 15.","DOI":"10.3390\/app152212176"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1309","DOI":"10.1007\/s13369-022-07539-1","article-title":"Extrusion-based technology in additive manufacturing: A comprehensive review","volume":"49","author":"Patel","year":"2024","journal-title":"Arab. J. Sci. Eng."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"030017","DOI":"10.1063\/5.0294997","article-title":"Implementation of corexy mechanism on large format 3D printer to optimize print time effectiveness","volume":"Volume 3334","author":"Sudirman","year":"2025","journal-title":"AIP Conference Proceedings"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"e73039","DOI":"10.1002\/adma.73039","article-title":"The Resolution\u2013Throughput Conflict in Material Extrusion Additive Manufacturing","volume":"38","author":"Mueller","year":"2026","journal-title":"Adv. Mater."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"4357","DOI":"10.1007\/s00170-025-15760-z","article-title":"Design and performance optimization of a cost-effective FDM 3D printer based on surface roughness and geometric errors","volume":"138","author":"Abdelwahab","year":"2025","journal-title":"Int. J. Adv. Manuf. Technol."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"e26749","DOI":"10.1016\/j.heliyon.2024.e25508","article-title":"Evaluation of the surface roughness and dimensional accuracy of low-cost 3D-printed parts made of PLA\u2013aluminum","volume":"10","author":"Sukindar","year":"2024","journal-title":"Heliyon"},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Kantaros, A., Katsantoni, M., Ganetsos, T., and Petrescu, N. (2025). The evolution of thermoplastic raw materials in high-speed FFF\/FDM 3D printing era: Challenges and opportunities. Materials, 18.","DOI":"10.3390\/ma18061220"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"135","DOI":"10.1007\/s40964-023-00438-3","article-title":"Theoretical Study of the Interactions between Vibrations of Large Numbers of FDM 3D Printers","volume":"9","author":"Sen","year":"2024","journal-title":"Prog. Addit. Manuf."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"102344","DOI":"10.1016\/j.rineng.2024.102344","article-title":"Analyzing Positional Accuracy and Structural Efficiency in Additive Manufacturing Systems with Moving Elements","volume":"23","author":"Chan","year":"2024","journal-title":"Results Eng."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"2851","DOI":"10.1007\/s00170-022-10789-w","article-title":"Vibration Compensation of Delta 3D Printer with Position-Varying Dynamics Using Filtered B-Splines","volume":"125","author":"Edoimioya","year":"2023","journal-title":"Int. J. Adv. Manuf. Technol."},{"key":"ref_11","doi-asserted-by":"crossref","unstructured":"Kopets, E., Karimov, A., Scalera, L., and Butusov, D. (2022). Estimating Natural Frequencies of Cartesian 3D Printer Based on Kinematic Scheme. Appl. Sci., 12.","DOI":"10.3390\/app12094514"},{"key":"ref_12","first-page":"1","article-title":"Rate Limits of Additive Manufacturing by Fused Filament Fabrication and Guidelines for High-Throughput System Design","volume":"16","author":"Go","year":"2017","journal-title":"Addit. Manuf."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"105","DOI":"10.1016\/j.jmapro.2023.01.065","article-title":"Impact of Multiple Infill Strategy on the Structural Strength of Single Build FDM Printed Parts","volume":"89","author":"Sajjad","year":"2023","journal-title":"J. Manuf. Process."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"110723","DOI":"10.1016\/j.compscitech.2024.110723","article-title":"Fiber Bundle Deposition Model and Variable Speed Printing Strategy for In-Situ Impregnation 3D Printing of Continuous Fiber Reinforced Thermoplastic Composites","volume":"255","author":"Quan","year":"2024","journal-title":"Compos. Sci. Technol."},{"key":"ref_15","first-page":"104896","article-title":"On the Mitigation of the Fiber Breakage in Material Extrusion Based Additive Manufacturing of Carbon Fiber Reinforced Polymer Composites","volume":"109","author":"Guo","year":"2025","journal-title":"Addit. Manuf."},{"key":"ref_16","doi-asserted-by":"crossref","unstructured":"Bochnia, J., Blasiak, M., and Kozior, T. (2021). A Comparative Study of the Mechanical Properties of FDM 3D Prints Made of PLA and Carbon Fiber-Reinforced PLA for Thin-Walled Applications. Materials, 14.","DOI":"10.3390\/ma14227062"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"174","DOI":"10.1007\/s42242-023-00239-1","article-title":"Numerical Simulation and Printability Analysis of Fused Deposition Modeling with Dual-Temperature Control","volume":"6","author":"Huo","year":"2023","journal-title":"Bio-Des. Manuf."},{"key":"ref_18","first-page":"29","article-title":"Process-Structure-Property Effects on ABS Bond Strength in Fused Filament Fabrication","volume":"19","author":"Abbott","year":"2018","journal-title":"Addit. Manuf."},{"key":"ref_19","first-page":"102378","article-title":"Fused Deposition Modelling: Current Status, Methodology, Applications and Future Prospects","volume":"47","author":"Tambuwala","year":"2021","journal-title":"Addit. Manuf."},{"key":"ref_20","doi-asserted-by":"crossref","unstructured":"Andrzejewski, J., Das, S., Lipik, V., Mohanty, A.K., Misra, M., You, X., Tan, L.P., and Chang, B.P. (2024). The Development of Poly(lactic acid) (PLA)-Based Blends and Modification Strategies: Methods of Improving Key Properties towards Technical Applications\u2014Review. Materials, 17.","DOI":"10.3390\/ma17184556"},{"key":"ref_21","first-page":"8040517","article-title":"Properties of 3D Printable Poly(lactic acid)\/Poly(butylene adipate-co-terephthalate) Blends and Nano Talc Composites","volume":"2020","author":"Wattanachai","year":"2020","journal-title":"J. Nanomater."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"98","DOI":"10.37373\/tekno.v12i1.1221","article-title":"Impact of infill pattern and line width on tensile strength of PLA FDM 3d printing","volume":"12","author":"Wahyudi","year":"2025","journal-title":"TEKNOSAINS J. Sains Teknol. Dan Inform."},{"key":"ref_23","unstructured":"(2023). Additive Manufacturing\u2014Test Artifacts\u2014Standard Test Geometries (Standard No. ISO\/ASTM 52902:2023)."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"159","DOI":"10.1007\/s40799-023-00629-1","article-title":"Base Vibration Effects on Additive Manufactured Part Quality","volume":"48","author":"Jensen","year":"2024","journal-title":"Exp. Tech."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"147","DOI":"10.29130\/dubited.441221","article-title":"Investigation the Effect of 3D Printer System Vibrations on Surface Roughness of the Printed Products","volume":"7","author":"Kam","year":"2019","journal-title":"D\u00fczce \u00dcniversitesi Bilim Teknol. Derg."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"1029","DOI":"10.1080\/10426914.2025.2487275","article-title":"Surface roughness investigation of 3D printed parts via in-situ pellet-filament co-extrusion process","volume":"40","author":"Krishnanand","year":"2025","journal-title":"Mater. Manuf. Process."},{"key":"ref_27","first-page":"32","article-title":"Optimization of tool-path generation for material extrusion-based additive manufacturing technology","volume":"1\u20134","author":"Jin","year":"2014","journal-title":"Addit. Manuf."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"020011","DOI":"10.1063\/1.5056274","article-title":"Surface Texture of Models Manufactured by FDM Technology","volume":"2017","author":"Kozior","year":"2018","journal-title":"AIP Conf. Proc."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"35","DOI":"10.1080\/17452759.2014.984042","article-title":"Thermal conditions affecting heat transfer in FDM\/FFE: A contribution towards the numerical modelling of the process","volume":"10","author":"Costa","year":"2015","journal-title":"Virt. Phys. Prototyp."},{"key":"ref_30","unstructured":"(1998). Geometrical Product Specifications (GPS)\u2014Length Standards\u2014Gauge Blocks (Standard No. ISO 3650:1998)."},{"key":"ref_31","unstructured":"(2013). Geometrical Product Specifications (GPS)\u2014Acceptance and Reverification Tests for Coordinate Measuring Systems (CMS)\u2014Part 8: CMMs with Optical Distance Sensors (Standard No. ISO 10360-8:2013)."},{"key":"ref_32","unstructured":"(2021). Geometrical Product Specifications (GPS)\u2014Surface Texture: Profile\u2014Part 1: Indication of Surface Texture (Standard No. ISO 21920-1:2021)."},{"key":"ref_33","unstructured":"(2021). Geometrical Product Specifications (GPS)\u2014Surface Texture: Profile\u2014Part 2: Terms, Definitions and Surface Texture Parameters (Standard No. ISO 21920-2:2021)."},{"key":"ref_34","unstructured":"(2021). Geometrical Product Specifications (GPS)\u2014Surface Texture: Profile\u2014Part 3: Specification Operators (Standard No. ISO 21920-3:2021)."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"1905","DOI":"10.1108\/RPJ-11-2024-0485","article-title":"Multi-objective Optimization of Surface Roughness, Dimensional Errors and Density in FFF 3D-Printed Glass Fiber-Reinforced PP Parts via Adaptive Neuro-Fuzzy Inference Modeling","volume":"31","year":"2025","journal-title":"Rapid Prototyp. J."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"695","DOI":"10.1007\/s00170-020-06138-4","article-title":"The Effect of Processing Parameters on the Mechanical Characteristics of PLA Produced by a 3D FFF Printer","volume":"111","author":"Gonabadi","year":"2020","journal-title":"Int. J. Adv. Manuf. Technol."},{"key":"ref_37","doi-asserted-by":"crossref","unstructured":"Isiani, A., Crittenden, K., Weiss, L., Odirachukwu, O., Jha, R., and Johnson, O. (2025). In-Situ Monitoring and Process Control in Material Extrusion Additive Manufacturing: A Comprehensive Review. J. Exp. Theor. Anal., 3.","DOI":"10.3390\/jeta3030021"},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"100596","DOI":"10.1016\/j.mser.2020.100596","article-title":"Additive Manufacturing of Structural Materials","volume":"145","author":"Liu","year":"2021","journal-title":"Mater. Sci. Eng. R Rep."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"33","DOI":"10.2478\/msr-2026-0005","article-title":"Evaluation of Dimensional Accuracy in Additive Manufacturing with Complex Measurement Artifacts","volume":"26","author":"Joch","year":"2026","journal-title":"Meas. Sci. Rev."},{"key":"ref_40","doi-asserted-by":"crossref","unstructured":"Guerra, F., Ruschel, R.C., and Silva, F.A. (2020). Use of Miniature Step Gauges to Assess the Performance of 3D Optical Scanners and to Evaluate the Accuracy of a Novel Additive Manufacture Process. Sensors, 20.","DOI":"10.3390\/s20030738"},{"key":"ref_41","doi-asserted-by":"crossref","unstructured":"Shu, H., Zou, C., Chen, J., and Wang, S. (2021). Research on Micro\/Nano Surface Flatness Evaluation Method Based on Improved Particle Swarm Optimization Algorithm. Front. Bioeng. Biotechnol., 9.","DOI":"10.3389\/fbioe.2021.775455"},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"27674","DOI":"10.1038\/s41598-024-78952-9","article-title":"Analyzing the effects of printing parameters to minimize the dimensional deviation of polylactic acid parts by applying three different decision-making approaches","volume":"14","author":"Solouki","year":"2024","journal-title":"Sci. Rep."},{"key":"ref_43","unstructured":"(2014). Geometrical Product Specifications (GPS)\u2014Filtration\u2014Part 1: Overview and Basic Concepts (Standard No. ISO 16610-1:2014)."},{"key":"ref_44","unstructured":"(2017). Geometrical Product Specifications (GPS)\u2014Geometrical Tolerancing\u2014Tolerances of Form, Orientation, Location and Run-Out (Standard No. ISO 1101:2017)."},{"key":"ref_45","unstructured":"(2011). Geometrical Product Specifications (GPS)\u2014Flatness\u2014Part 1: Vocabulary and Parameters of Flatness (Standard No. ISO 12781-1:2011)."},{"key":"ref_46","unstructured":"Myers, B.L., and Chang, S. (2016, January 20\u201323). Metrology for 3D Printing: Assessing Methods for the Evaluation of 3D Printing Products. Proceedings of the Technical Association of the Graphic Arts (TAGA) Annual Technical Conference, Memphis, TN, USA."},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"2281","DOI":"10.1007\/s00170-023-12410-0","article-title":"Defects and residual stresses finite element prediction of FDM 3D printed wood\/PLA biocomposite","volume":"129","author":"Contuzzi","year":"2023","journal-title":"Int. J. Adv. Manuf. Technol."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"45","DOI":"10.12691\/ajme-7-2-1","article-title":"Experimental Characterization of the Influence of Nozzle Temperature in FDM 3D Printed Pure PLA and Advanced PLA+","volume":"7","author":"Alsoufi","year":"2019","journal-title":"Am. J. Mech. Eng."},{"key":"ref_49","doi-asserted-by":"crossref","unstructured":"Guessasma, S., Belhabib, S., and Nouri, H. (2019). Microstructure and Mechanical Performance of 3D Printed Wood-PLA\/PHA Using Fused Deposition Modelling: Effect of Printing Temperature. Polymers, 11.","DOI":"10.3390\/polym11111778"},{"key":"ref_50","doi-asserted-by":"crossref","unstructured":"Konjati\u0107, P., Tonec, S., and Cukor, G. (2023). Accuracy of FDM PLA Polymer 3D Printing Technology Based on Tolerance Fields. Processes, 11.","DOI":"10.3390\/pr11102810"}],"container-title":["Materials"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1996-1944\/19\/15\/3255\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,8,3]],"date-time":"2026-08-03T08:06:29Z","timestamp":1785744389000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1996-1944\/19\/15\/3255"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,8,1]]},"references-count":50,"journal-issue":{"issue":"15","published-online":{"date-parts":[[2026,8]]}},"alternative-id":["ma19153255"],"URL":"https:\/\/doi.org\/10.3390\/ma19153255","relation":{},"ISSN":["1996-1944"],"issn-type":[{"value":"1996-1944","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,8,1]]}}}