Official Launch - Mon. August 25th, 2025

S1 Plus - Automatic Filament Loader

$179.99 USD

~~$210.00 USD~~ $179.99 USD

Sale Sold out

30-Day Return Policy

NOT FOR USE WITH TPU (or other flexible filaments)

Roller Size 1 kg MAX 3 kg MAX 5 kg MAX No Sides

Quantity

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What's New

The S1 Plus is a complete upgrade featuring stronger ASA components for improved durability, Wi-Fi connectivity with the S1 Plus app, and an adjustable preload force for better compatibility across different printers and materials.

Pre-Assembled

Assembly is no longer needed. The S1 Plus will arrive fully assembled.

Beta version

S1 Plus App

Monitor and manage your S1+ units from anywhere
Filament Level & Usage Tracking
Filament Inventory Management
Low-Filament Notifications

Learn More

Auto Reloads for Any 3D Printer

No Paused Prints

The S1 Plus takes the hassle out of 3D printing by automating filament changes and eliminating downtime.

No more babysitting your printer or worrying about wasted filament—just seamless, uninterrupted printing so you can focus on what matters most: your projects.

How it Works

The S1 Plus is designed for back-to-back filament transitions, automatically loading the next spool as soon as the first one runs out.

Seamlessly switches between two spools without stopping your print.
Automatically loads the next spool when the first one runs out.

Zero Downtime

The S1 allows live filament loading, meaning you can reload filament while printing to maximize your printer’s productivity!

For All Spool Sizes

The S1 Plus is available in multiple roller sizes to handle any filament spool size.

Larger rollers can also be used with smaller spools, so you don’t need a different unit for every roll size.

Adjustable Filament Preload Force

Fine tune in the App– Control how much preload force the S1 Plus applies.
Perfect for printers with long Bowden tubes or weaker extruders.
Smoother feeding, better retractions, more reliable prints

Compatibility requirements for the Infinity Flow S1

Universal Compatibility

The Infinity Flow S1 Plus is designed to be compatible with most FDM 3D printers that use 1.75mm filament. It requires no firmware modifications, so setup is simple and straightforward.

All you need is an adapter to connect a Bowden tube to the inlet of your printer’s extruder if your printer doesn’t already have one.

See User Tested Printers List