Is this 3D model free to download?

Yes, Neptune 4 & 4 Pro PEI sheet positioner 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 Siyah__Marti, 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 & 4 Pro PEI sheet positioner

Source: Thingiverse by Siyah__Marti

The Neptune 4 & 4 Pro PEI sheet positioner is a free printable 3D model from Thingiverse by Siyah__Marti. Neptune 4 & 4 Pro PEI sheet positioner, it's about 2mm wider than the bed, 237mm. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

30 saves Source: Thingiverse Updated 2026-09-03

Tags: Neptune, 4, &, 4, Pro, PEI, sheet, positioner

About this model

Neptune 4 & 4 Pro PEI sheet positioner, it's about 2mm wider than the bed, 237mm. Just use the long and one of the short edges to align the PEI sheet or scale it to your needs. Update:I uploaded a separate STL for the Pro, it has higher walls now.

Frequently asked questions

Is this 3D model free to download?: Yes. Neptune 4 & 4 Pro PEI sheet positioner 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 Siyah__Marti.
Who made this model?: Designed by Siyah__Marti, 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.