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Elegoo Neptune 4 Series Adapter

Updated on Apr 29, 2025

This document contains information for the Neptune 4 series printers designed to work with the Infinity Flow S1 filament loader. To connect the S1 to your 3D printer, you'll need an adapter that links the Bowden tube from the S1 to your printer's extruder.

 

This adapter is available here for download or purchase on our website.

Zip File Download: Neptune 4 Adapter

Contents:

  • Neptune_4_Adapter.stl (Printable file)
  • Neptune_4_Adapter.spt (CAD file)

 

Printer Compatibility

  • Elegoo Neptune 4
  • Elegoo Neptune 4 Pro
  • Elegoo Neptune 4 Plus
  • Elegoo Neptune 4 Max

 

Making the Adapter

Step 1: Print the Part

Print Settings:

  • 0.20mm Layer Height
  • Enable Auto Supports
  • Print in orientation in picture

 

Step 2: Remove the support material

 

Step 3: Adapter Assembly

  • Take off rubber grommet if present on the press fit fitting
  • Press fitting into adapter using pliers, a press, or a vise

 

Adapter Installation

Step 1: Remove 2 M3 Screws 

  • Remove two M3 screws from the print head (circled in red below).

 

Step 2: Install the Adapter

  • Slide the adapter into place 
  • Screw the adapter into place using the included M3x25mm Screws

 

Step 4: Insert the bowden tube 

  • Press the Bowden tube through the adapter 
  • Make sure it is fully seated
  • Replace the cover and you’re ready to begin printing :)