MakerBot® Smart Extruder+ (Replicator) | GoEngineer Store。Makerbot Smart Extruder+ 3D Printer Extruder for Replicator。MakerBot Smart Extruder+ for Replicator+ and Mini+ 3D Printer。。昔は買って使わないで置いていました。Let's Take a Look Inside the Smart Extruder+ - YouTube。