Summary

This is one eighth of an regular icosahedron. It can be placed in the corner of three mirrors, each with a right angle with respect to the others. Since the thing is cut exactly at the symmetry axes, the mirrors will show the full icosahedron. This can be used to easily show symmetry in a classroom.
Additionally there is an STL file for the dodecahedron (not shown on photographs).

Print Settings

Printer Brand:

Creality

                                            <p class="detail-setting printer"><strong>Printer: </strong>                     <div><p>CR10S PRO</p></div></p>                                                                                <p class="detail-setting rafts"><strong>Rafts: </strong>                     <div><p>No</p></div></p>                                                                                <p class="detail-setting supports"><strong>Supports: </strong>                     <div><p>Yes</p></div></p>                                                                                <p class="detail-setting resolution"><strong>Resolution: </strong>                     <div><p>0.2mm</p></div></p>                                                                                <p class="detail-setting infill"><strong>Infill: </strong>                     <div><p>20%</p></div></p>                                                    <strong>Filament:</strong> Real PLA                White

Icosahedron in mirrors