MakerBot® Smart Extruder+ (Replicator) | GoEngineer Store。Let's Take a Look Inside the Smart Extruder+ - YouTube。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。Smart Extruder+ for Replicator+ and Mini+ 3D Printer| MakerBot。