Is this 3D model free to download?

Yes, Neptune 4 Pro Secondary Spool Holder is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link to open the original listing by the creator.

Where do I download the STL file?

The download is hosted by Thingiverse. Use the "Download from Thingiverse" link on this page to open the original listing and grab the file, or save it to your print queue in the free Thinger app.

Designed by Ericaurte, published on Thingiverse. Please credit the creator when sharing your print.

Can I print this at home?

Yes. This is a printable 3D model intended for home FDM and resin printers. Check the original listing for suggested print settings.

Neptune 4 Pro Secondary Spool Holder

Source: Thingiverse by Ericaurte

The Neptune 4 Pro Secondary Spool Holder is a free printable 3D model from Thingiverse by Ericaurte. Just using the thread size of the original model, this is a second spool holder if you want two spools of filament to be mounted on the printer at once so that you can quickly. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

91 saves Source: Thingiverse Updated 2026-10-14 License: CC-BY-SA · commercial OK 1 makes Category: 3D Printer

Tags: Neptune, 4, Pro, Secondary, Spool, Holder

About this model

Just using the thread size of the original model, this is a second spool holder if you want two spools of filament to be mounted on the printer at once so that you can quickly swap during or between prints.

Frequently asked questions

Is this 3D model free to download?: Yes. Neptune 4 Pro Secondary Spool Holder is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link above to open the original listing.
Where is the STL hosted?: The download is hosted by Thingiverse, not by Thinger. We link you directly to the original listing by Ericaurte.
Who made this model?: Designed by Ericaurte, published on Thingiverse. Please credit the creator when sharing your print online.
Can I print this at home?: Yes. This model is intended for home FDM and resin 3D printers. Check the original listing for suggested print settings like layer height and supports.