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78 SMT007 MAGAZINE I APRIL 2018 with thinner walls and less material support. The mechanical stress that the test specimens are subjected to help determine how well the specimens retain their dimensional accuracy. The results from this test also help guide which applications each of the materials are suited for. As with flexural testing, any bending, breaking, deformation, delamination or other functional and/or cosmetic effect is recorded. X-ray Analysis The test specimens were placed in an X-ray machine before and after tests to determine if and how they are affected by various tests. The significance of this analysis is that the results can accurately reflect how the test specimen has reacted in various conditions. The results of this test are qualitative in nature and repre- sented by pictures taken of the test specimens. Qualitative Analysis – Optical Checking and SEM Throughout the process of the material char- acterization, various optical recordings were performed such as pictures taken of the test specimens, X-ray analyses done, as well as scanning electron microscope pictures and measurements. The results of these tests and analyses are to provide a deeper understand- ing of what happens to the 3D printed materi- als under various conditions and helps guide the application decision process. Figure 7: Flexural test results. Figure 9: X-ray analysis results. Figure 8: Thin wall flexural testing results.