Filament Cutter Custom Mount Design Guide
Overview
The Infinity Flow Filament Cutter uses a built-in snap-fit mount system — no screws, no adhesives. This keeps installation fast, tool-free, and consistent across all supported setups.
This guide covers everything you need to design a working custom mount, including key constraints, required clearances, and best practices for smooth filament flow.
CAD Files
All design files are included in a single ZIP package: Download Cutter Mount Design Files (ZIP)
This includes:
- Filament_Cutter_Body.STEP
- Filament_Cutter_Body.STL
- Example_SnapFit_Mount.STEP
- Example_SnapFit_Mount.STL
Use the STEP files for CAD integration and dimensional accuracy. The STL files are also provided for reference or test prints.
Key Design Requirements
Mounting Position on Filament Roll:
Mount the cutter just after the filament leaves the roll but before it enters your S1, AMS, or extruder. The cutter should sit inline with the filament path and allow smooth movement through the cutter.
⚠️ The cutter’s inlet tube must make direct contact with any obstruction (like bent filament, tangles, or tape) in order to trigger a cut.
If the tube can’t physically reach and press against the obstruction, the cutter will not engage.
Filament Entry/Exit Alignment:
Filament must enter and exit the cutter in-line with the guide tubes. Avoid sharp angles or bends that could put stress on the inlet tube.
Inlet Tube Length Modifications:
The inlet tube must be long enough to ensure smooth filament entry — especially if your mount introduces bends in the filament path. A slightly longer tube can help reduce sharp turns.
However, if the tube is too long, it may introduce excess friction. This added resistance can trigger the cutter’s internal mechanism and cause false activation (miscuts).
For best results, test the inlet tube with your mount design and trim it as needed. Clean, low-friction paths are key to cutter reliability.
Slider Clearance:
Remember that the slider must be accessible in order to reset the cutter after it completes a cut. Do not obstruct the path of the slider.
Getting Help
Need assistance with your setup or have a question about the cutter?
💬 For community support, setup ideas, and mount designs, visit our subreddit:
🛠️ For returns, exchanges, order issues or technical support that requires direct help from our team, submit a request here:
