Summary

You have to cut the end plate of the original JGAurora A5 (should also fit for A3S) spoolholder by a dremel. After that you can insert this extension into the pipe of the spoolholder. It fits very tight, so you may need a hammer to do so.
After the process the spoolholder fits for filament spools up to 10cm width.

This thing was made with Tinkercad.

Print Settings

Printer:

JGAurora A5

                                            <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>30%</p></div></p>                                                        <br>                        <p class="detail-setting notes"><strong>Notes: </strong>                    </p><div><p>I printed with walthickness of 2mm, but I think that's not really needed.</p></div>

JGAurora A5 spoolholderextension