## 4 Conclusions  
This research has yielded valuable insights into the mechanical properties of 3D-printed ABS filament and ABS-like resin specimens. The two pivotal 3D printing technologies, FDM and SLA, were the principal subjects of inquiry, with a particular focus on their influence on critical mechanical parameters: tensile strength, Young's modulus, and maximum displacement.  
The findings illuminate a profound disparity in the mechanical parameters of FDM- and SLA-printed specimens. Notably, SLA consistently emerges as the superior technology, displaying substantial enhancements across the board. Most notably, in the realm of tensile strength, displacement, and Young's modulus, the advantages of SLA technology are strikingly evident.  
When ABS samples were evaluated at 100% fill density, a significant increase in average tensile strength was found, namely a 28.81% increase for the 3D printed FDM ABS specimens and a remarkable 30.49% increase for the 3D printed SLA ABS-like resin specimens. In addition, there was also a notable increase in the average maximum displacement value, which increased by 35.51% for the 3D-printed FDM ABS specimens with 100% fill density, while for the SLA 3D-printed ABS-like resins with 100% fill density, the increase in fill density reached an extraordinary 38.92%.  
For specimens at 100% fill density, a significant increase in 26.81% was observed for FDM 3D printed ABS and an even more impressive increase in 13.48% for 3D printed ABS-like SLA resin, demonstrating the obvious advantages that SLA has in improving material stiffness.  
In a world increasingly shaped by innovation and technological advancement, the significance of these findings cannot be overstated. The implications reach far and wide, extending to industries reliant on 3D-printed components. These discoveries hold the promise of substantially raising the benchmarks for product safety and durability, thereby propelling progress in the fields of manufacturing and design.  
In summary, the emergence of SLA technology heralds an exciting frontier, one with the potential to redefine the limits of mechanical performance in 3D-printed ABS and ABS-like resin materials. This narrative extends beyond the confines of the laboratory, casting ripples across various sectors, promising new possibilities and applications with heightened capabilities. The potential of SLA technology paves the way for a brighter future in 3D printing, where the boundaries of what is achievable continue to expand.  
The findings suggest promising avenues for future research with the following aims: (1) to investigate how different resin compositions impact mechanical properties for optimized material formulations; (2) to explore the relationship between infill density, resin curing, and mechanical properties to enhance control over deformation characteristics; (3) to extend research to assess the performance of SLA-printed ABS-like resins in diverse applications, providing practical insights, etc. This research framework aims to contribute to the ongoing evolution of 3D printing technologies, unlocking new possibilities for material optimization, application-specific performance, and sustainability in manufacturing processes.  
**Funding:** The APC was funded by University of Novo Mesto, Faculty of Mechanical Engineering, Novo mesto, Slovenia.  
**Institutional Review Board Statement:** Not applicable.  
**Informed Consent Statement:** Not applicable.  
**Data Availability Statement:** The raw data supporting the conclusions of this article will be made available by the authors on request.  
**Acknowledgments:** This research was conducted at the University of Novo Mesto, specifically, within the Faculty of Mechanical Engineering.  
**Conflicts of Interest:** The author declares no conflict of interest.