## 3 Results
### Comparative Analysis
These observations underscore the benefits of SLA 3D printing in augmenting the mechanical characteristics of ABS-like resin materials, regardless of the infill density, in comparison to FDM printing. In FDM-printed tensile-tested specimens, those containing ABS material with 30% infill density show an average strain of 2.16%. On the other hand, samples with 100% infill density exhibited a slightly higher deformation, measuring 3.1%. This suggests that increasing the infill density in FDM printing of ABS material does not significantly enhance deformation resistance. In the case of SLA-printed tensile-tested specimens using ABS-like resin with 30% infill density, the average strain is 2.24%. Conversely, tensile-tested specimens with 100% infill density reached a higher strain value of 4.15%. These results indicate that increasing the infill density in SLA printing of ABS-like materials may lead to a substantial increase in deformation, raising questions about the practicality of using higher infill densities (Figure 14b). The comparison of FDM- and SLA-printed tensile-tested specimens reveals that while higher infill density in FDM does not significantly improve deformation resistance, the same parameter in SLA printing of ABS-like materials may result in a considerable increase in deformation, prompting considerations about the viability of employing elevated infill densities. Figure 14c furnishes valuable data concerning the average nominal strain at break for both FDM and SLA 3D-printed tensile-tested specimens, considering different infill densities. In the case of FDM-printed specimens with 30% infill density, the average nominal strain at break was recorded at 2.67%, while specimens with 100% infill density exhibited a higher value of 3.62%. This disparity suggests that increasing the infill density in FDM printing has a noticeable impact on the material's ability to withstand strain, resulting in improved performance at higher densities. SLA 3D-printed ABS-like resin samples displayed a different trend. Those with 30% infill density had an average nominal strain at break of 3.614%, whereas specimens with 100% infill density showed a significant increase to 5.19%. This contrast indicates that, unlike FDM, higher infill densities in SLA printing contribute to a substantial rise in the material's ability to endure strain, emphasizing the importance of infill density considerations in material selection and 3D printing processes. The data presented in Figure 14c highlight the substantial influence of infill density on the average nominal strain at break for FDM and SLA 3D-printed tensile-tested specimens. The FDM-printed specimens exhibited an observable improvement in strain resistance with increased infill density, while SLA-printed ABS-like resin samples demonstrated a significant rise in strain endurance, underscoring the critical role of infill density considerations in material selection and 3D printing processes. The average value of the maximum force at failure followed the same trend, as shown in Figure 14f. Overall, these findings indicate that SLA technology offers clear advantages in terms of mechanical performance, making it a promising option for the production of ABS and ABS-like resin materials with improved mechanical properties.