Bambu Filament Cutter Stopper — P2S (FAC171)

Official Replacement Assembly • Precise Filament Cutting • Genuine Bambu Lab Part

Overview

The Bambu Filament Cutter Stopper (FAC171) is the official replacement cutter stopper assembly for the Bambu Lab P2S. Mounted on the left side inside the printer chamber, it positions and supports the filament cutter so the printer can cleanly sever filament before every material change or unload operation.

If the cutter stopper becomes damaged or worn, replacing it helps restore reliable filament changes and prevents cutter-related errors.

Why replace the Filament Cutter Stopper?

• Restores proper filament cutting performance
• Supports reliable automatic filament changes and unloading
• Helps prevent cutter-related error messages
• Genuine Bambu Lab replacement for factory fit and operation
• Ideal replacement if the original assembly becomes worn or damaged

Key features

• OEM Bambu Lab replacement assembly
• Holds and actuates the filament cutter mechanism
• Enables clean filament cuts above the hotend before material changes
• Precision-molded for accurate alignment
• Designed specifically for the P2S platform

Compatibility

• Bambu Lab P2S

Please verify your printer model before ordering.

Common signs of replacement

• Printer reports Unable to Cut Filament errors
• Filament is not completely severed during unloading
• Cutter mechanism sticks or does not return properly
• Visible damage to the cutter stopper assembly or pivot

What's in the box

• Cutter Top Rod Assembly ×1
• BT3×5 Screw ×1
• BT3×8 Screw ×1
• BT3×16 Screw ×1

Installation & maintenance

• Power off the printer before servicing
• Follow the official Bambu Lab replacement guide during installation
• Verify smooth cutter movement after installation by performing a filament load and unload test
• Periodically inspect the cutter mechanism for debris or broken filament pieces that could interfere with operation

Local advantages (Convoy-Westcan, Winnipeg)

• Same-day or next-business-day dispatch when in stock
• Winnipeg: free local courier on eligible filament and accessory orders over $60
• In-store pickup available with knowledgeable local support

Policy snapshot

Replacement parts and mechanical components are final sale once installed. Approved returns must be new and unopened; restocking fees and non-refundable shipping may apply.