**5. Conclusions**

TPMS gyroid sheet-based structures were, for the first time, successfully manufactured by EBM using Melt and Wafer Themes (MT and WT, respectively). To produce specimens in MT, a 0.2 mm thick model was used, while to produce specimens in WT, a zero-thickness model was used. It was initially assumed that in using proper input design parameters, corresponding EBM-manufactured MT and WT samples would have equivalent geometrical and mechanical properties. However, we observed that:


**Author Contributions:** Conceptualization, D.K., S.E., T.M., R.S., M.S., A.K., and G.B.; methodology, D.K., M.K., S.E., T.M., W.S., and A.K.; CT measurements, D.M.; software D.K., S.E., T.M., D.M., K.M., and D.C., investigation, D.K., M.K., S.E., T.M. and D.M.; writing—original draft preparation, D.K.; writing—review and editing, D.K., S.E., T.M., R.S., M.S., A.K., A.P., D.C., and G.B. All authors have read and agreed to the published version of the manuscript.

**Funding:** The research was performed at Tomsk Polytechnic University within the framework of the Tomsk Polytechnic University Competitiveness Enhancement Program grant. The work was supported by the Ministry of Science and Higher Education of the Russian Federation (State Project "Science" No. WSWW-2020-0011). Sample manufacturing was supported by the EU Regional Development Fund and Swedish Agency for Economic and Regional Growth Grant No. 20202610. D. Khrapov would like to thank Kirill Evdokimov for support at modeling. The research at BAM was supported by the G-RISC program funded by the German Federal Foreign Office via the German Academic Exchange Service (DAAD) (Funding Decision No. M-2020a-6).

**Institutional Review Board Statement:** Not applicable.

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** The data presented in this study are available on request from the corresponding author. The data are not publicly available as they also form part of an ongoing study.

**Conflicts of Interest:** The authors declare no conflict of interest.
