Summary

Hole:
Diameter: 12.7 mm
Depth: 40.0 mm

Perimeter: >2 (I used two for testing and even that was strong enough)
Layer height: 0.15 mm but probably stronger with 0.20 mm

If you need a holder for IKEA lamp just tell me the diameter of the foot and I'll post a new one.

Print Settings

Printer Brand:

Prusa

                                            <p class="detail-setting printer"><strong>Printer: </strong>                     <div><p>i3 MK3</p></div></p>                                                                                <p class="detail-setting resolution"><strong>Resolution: </strong>                     <div><p>0.15mm</p></div></p>                                                                                <p class="detail-setting infill"><strong>Infill: </strong>                     <div><p>20</p></div></p>                                                    <strong>Filament:</strong> PM PLA                White

Lamp Holder