Summary

This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/dKjYZBfeb2u

It's just an expanded end to a M3 bolt so big fingers can tighten an M3 nut and bolt as part of a larger assembly

Print Settings

Printer Brand:

Prusa

                                            <p class="detail-setting printer"><strong>Printer: </strong>                     <div><p>Prusa Clone</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>No</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>100% - it's tiny!</p></div></p>                                                        <br>                        <p class="detail-setting notes"><strong>Notes: </strong>                    </p><div><p>This is not too fussy to print :)</p><p>IMPORTANT - the cones below the barbell ends of the old-fashioned-tap-like bolt head are support material. They tend to snap off as you take them off the build plate - that's the idea!</p></div>

Post-Printing

Tiny amount of cleanup may be needed other than snapping off those cones. You may have to fettle the hole a tad.

How I Designed This

This is a small part of my soon-to-be-released Phoba mobile phone car mount which I thought would be of general use

Phoba M3 BoltHead