**4. Discussion—Guidelines for the Placement of 3D Printing Devices**

In general, mathematical methods of optimizing the arrangement of workstations work well when using 3D printing machines; special attention should be paid to the following aspects when designing layout plans:


A significant difficulty is also the process of transforming the solution from a mathematical method of optimizing the arrangement of workstations to a specific layout since the limited space, dimensions of workstations, and the required distance to the transport route and the need to connect utilities must be taken into account. This design stage is only partially supported by CAD software, which provides ready-made machines and devices as parameterized objects, so it relies on the knowledge and experience of the layout designer.

**Author Contributions:** Conceptualization, A.K. and R.W.; Methodology, A.K.; Validation, R.W.; Formal analysis, A.K.; Resources, A.K. and R.W.; Data curation, A.K.; Writing—original draft preparation, A.K. and R.W.; Writing—review and editing, A.K.; Visualization, A.K. and R.W.; Funding acquisition, R.W. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research received no external funding.

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