Summary

This is a business card holder, there is a 2mm hole to join the 2 parts.
To make the pin I used a simple piece of abs and with a lighter I burned the 2 sides to make a perfect rivet.

Print Settings

Rafts:

No

                                            <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>0%</p></div></p>                                                        <br>                        <p class="detail-setting notes"><strong>Notes: </strong>                    </p><div><p>Shell 2mm or 5 shell with 0.4 nozzle</p></div>

Post-Printing

Put a piece of ABS filament inside the hole as a pin and with a lighter burn the 2 sides to make a rivet as shown in the picture

Business card holder