Summary

My son is off on an adventure with his GoPro Hero 7 and needed to remove the lens cap often, this seems to be a difficult task with wet slippery hands so he asked if I could 3D print him a "spanner".
This is my solution, it should be reasonably robust and should not slip and easy to store in a pocket or such.

This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/7o40TUxnip1

Print Settings

Printer Brand:

TEVO

                                            <p class="detail-setting printer"><strong>Printer: </strong>                     <div><p>Black Widow</p></div></p>                                                                                <p class="detail-setting rafts"><strong>Rafts: </strong>                     <div><p>Doesn't Matter</p></div></p>                                                                                <p class="detail-setting supports"><strong>Supports: </strong>                     <div><p>No</p></div></p>                                                                                <p class="detail-setting resolution"><strong>Resolution: </strong>                     <div><p>.1</p></div></p>                                                                                <p class="detail-setting infill"><strong>Infill: </strong>                     <div><p>25%</p></div></p>                                                    <strong>Filament:</strong> generic PLA                white                    <br>                        <p class="detail-setting notes"><strong>Notes: </strong>                    </p><div><p>I used a 0.1 layer but I don't think 0.2 would be detrimental.</p></div>

GoPro Hero 7 Lens Spanner