S1 - Automatic Filament Loader

I purchased 2x S1 Auto Filament Loaders as well as the S1 Upgrade Kit It has been a whole unsatisfactory experience.

I’ve had ongoing product reliability issues and a failed upgrade experience involving the S1 Auto Filament Loaders and the S1 Upgrade Kit sold by Infinity Flow

I purchased two S1 Auto Filament Loaders for use in my print workflow. From the outset, the units have been problematic. The loaders have been unreliable, causing repeated interruptions in print jobs. As a result, I have incurred significant wasted filament, lost print time, and operational disruption.

In an effort to resolve the issues, I purchased the S1 Upgrade Kit. Unfortunately, the upgrade process was extremely complex and not reasonably executable by a typical end user. The process required:
• Physical gear reversals
• Firmware updates
• Technical steps that were not clearly documented
• Repeated troubleshooting attempts across two separate computers

Despite multiple attempts, I was unable to complete the upgrade successfully. The process was far more complicated than represented and appears poorly engineered for customer installation.

I feel I have thrown good money after bad attempting to make this system function as intended. I’ve also purchased a number of the auto filament cutters and these are spotty at best.

I have to admit, I have never been this disappoint in a product. After 5 days and 3 kg of filament, I still have not had a completed print on a brand new unit. It appears I was the last fool to purchase this S1 version. Now I have to try a series of firmware updates, cutting the tubes just right to make it work, if possible. This product should have been a big help, now it just a waste of time and they avoid any technical support help at all cost. Yet they know they have huge issues with their product.

It rocks. No tangles as with AMS and AMS2. 100% success with transition from one roll to the other (also a problem AMS and AMS2). Less problems with brittle filament breaking in the tubing (it just drive more filament behind it). I’ve ordered my 3rd one (one for my x1e and two for the H2D). I plan design my own dry boxes and holder for the filament loader to best fit my 3kg polymaker rolls and 3kg tangled rolls). I bought some extra gears to modify so I can use it with the brittle filaments (PPS-CF, PPA-CF).

I run a print farm and recently installed several Infinity Flow S1 units. So far, they’ve been working great and have significantly improved our workflow.

One of the biggest changes we’ve made is transitioning away from 3.5kg spools back to standard 1kg spools. At first, this seemed like a step backward—larger spools meant fewer swaps—but in practice, it’s been the opposite. With the Infinity Flow S1 handling spool changes automatically, downtime is reduced. Previously, we’d often find printers sitting idle, using electricity and waiting for someone to swap filament, sometimes for hours. That kind of pause not only kills efficiency but often results in defects when the machine resumes and wasted filament.

Now, with these units in place, we’ve cut our exposed filament inventory nearly in half and improved print reliability. Fewer delays, less defective prints, an easier management of spool swaps.

All in all, I’m very happy with how the Infinity Flow S1 units are performing. They’ve solved real, daily issues in our operation, and I wouldn’t hesitate to recommend them to anyone managing multiple machines.

Feeds from roll to roll without hiccups.