Summary

Model rocket for 18mm estes motors. This was tested and it flew well.
1.1 didn't whistle
1.2 Head has a larger hole

Print Settings

Printer:

Voron CoreXY

                                            <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>.3</p></div></p>                                                                        <br>                        <p class="detail-setting notes"><strong>Notes: </strong>                    </p><div><p>Printed in Vase mode with a .6 nozzle. Tune extrusion multiplier to adjust the tightness of fit.<br>Use a brim for stability.</p><p>Whistle feature might need different settings to print correctly</p></div>

Post-Printing

The motor was loose so two wraps of electrical tape made it just right. This will depend on printer calibration

There is a loop in the body for a shock cord that can be attached to an eye screw in the head.

18mm Model rocket