Summary

I have included 2 types of key styles for this project the finished piece should hold 6 keys the shim is needed in the middle to prevent warping when the keys are being used.
You will need 3M bolts and nuts for this preferably locking nuts.

Print Settings

Printer:

Home made DIY

                                            <p class="detail-setting resolution"><strong>Resolution: </strong>                     <div><p>.2mm</p></div></p>                                                                                <p class="detail-setting infill"><strong>Infill: </strong>                     <div><p>56 percent</p></div></p>                                                        <br>                        <p class="detail-setting notes"><strong>Notes: </strong>                    </p><div><p>I used Simplify 3d as a slicer and made the wall thickness 4 layers to make the area around the loop where the ring goes through strong enough to last<br>This was printed in ABS. If you use a 100 watt light bulb in your print enclosure with a heated bed it will prevent warping </p></div>

Post-Printing

If you do this in ABS use a watercolor brush to paint acetone around the loop area this will help prevent delamination.

Key Holder