Summary

Scale the models to the size you need: width of paper + (5% to 7% extra width)
No supports necessary.
4x6 inch cards: 6.3 x 4.3 x 1.5 inches
6x6 inch origami paper: 6.3 x 6.3 x 1.5 inches
Tested with PLA on Prusa mini printers.

Print Settings

Printer Brand:

Prusa

                                            <p class="detail-setting printer"><strong>Printer: </strong>                     <div><p>MINI</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 infill"><strong>Infill: </strong>                     <div><p>Standard (15%)</p></div></p>                                                    <strong>Filament:</strong> Any PLA                Any

Containers for Origami Paper and 4x6 Cards