Summary

Credit to Philippe Carrier for his model on GrabCad as I used that as the base. Modified the the fit to get a similar feel to the injected molded K'NEX that are sold. This is designed specifically for printing with a 0.2mm layer height, using a different lay height will likely change the fit.

https://grabcad.com/library/knex-connector-yellow

Print Settings

Printer Brand:

Prusa

                                            <p class="detail-setting printer"><strong>Printer: </strong>                     <div><p>I3 MK3S</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%</p></div></p>                                                    <strong>Filament:</strong> Prusament PETG                Orange                    <br>                        <p class="detail-setting notes"><strong>Notes: </strong>                    </p><div><p>Needs to be PETG or other ductile plastic. PLA brakes after a few insertions.</p></div>

Knex Yellow Half Circle