Summary

Designed this drill guide with changeable bushings to ease perpendicular drilling.

The threads on the bushings and base already have enough slack to print and use.
Print the bushings with at least 3 perimeters and the thread up.

Print Settings

Printer Brand:

Creality

                                            <p class="detail-setting printer"><strong>Printer: </strong>                     <div><p>Ender 3</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>0.2</p></div></p>                                                                                <p class="detail-setting infill"><strong>Infill: </strong>                     <div><p>25</p></div></p>                                                    <strong>Filament:</strong> ESUN PLA                    <br>                        <p class="detail-setting notes"><strong>Notes: </strong>                    </p><div><p>Print the bushings with the threads up. Use at least 3 perimeters.</p></div>

Post-Printing

After printing make the holes in the bushings correct with the applicable drill bit

How I Designed This

Fusion 360

Drill Guide with interchangeable bushings