MakerBot SMART EXTRUDER+ Swappable 3D Printer Extruder with Filament and Clog Detection, 0.4 mm Nozzle, for Replicator+ / Mini+ / 5th Gen / Z18

When a 3D printer's extruder fails—clogging, jamming, or inconsistent filament flow—every print becomes a gamble. The MakerBot SMART EXTRUDER+ eliminates that uncertainty. Engineered as a swappable, intelligent print core, it restores reliable, high-quality extrusion to MakerBot Replicator+ and Replicator Mini+ printers, and is backward compatible with 5th Generation Replicator and Z18 models. With over 160,000 hours of reliability testing using MakerBot PLA, this extruder is built to keep your projects moving.

Who is it for

Educators running classroom print farms, engineers prototyping iteratively, and hobbyists who demand consistent results will appreciate the SMART EXTRUDER+. Its magnetic quick-release design allows tool-free swaps in seconds, minimizing downtime between material changes or maintenance. Automatic filament run-out and clog detection pause prints before failures occur, saving both time and material.

Main features

• Swappable Smart Extruder with magnetic quick-release for effortless installation
• Automatic filament detection pauses prints on run-out, preventing air prints
• Clog detection pauses prints when extrusion is blocked, protecting the printer
• Optimized for MakerBot PLA and Tough PLA filaments (1.75 mm diameter)
• Integrated 0.4 mm nozzle and enhanced thermal management for consistent flow
• Automatic calibration ensures precise first-layer adhesion
• Compatible with MakerBot Replicator+, Mini+, 5th Gen Replicator, and Z18

Specifications

• Product type: 3D printer extruder
• Extruder type: Swappable Smart Extruder
• Filament diameter: 1.75 mm
• Nozzle diameter: 0.4 mm
• Supported filament materials: MakerBot PLA, MakerBot Tough PLA
• Filament detection: Yes (automatic print pause on run-out)
• Clog detection: Yes (automatic print pause on clog)
• Connectivity: Magnetic quick-release
• Reliability testing: 160,000+ hours with MakerBot PLA
• Thermal management: Enhanced
• Print core configuration: Single
• Heater block: Integrated
• Thermistor: Integrated
• Cooling: Integrated fan
• Automatic calibration: Yes
• Optimized software: MakerBot Print

Tips

Keep a spare SMART EXTRUDER+ on hand to minimize downtime during long print jobs. When swapping extruders, ensure the printer is powered off and the magnetic contacts are clean for reliable communication. For best results, use genuine MakerBot PLA or Tough PLA filament.