Maintaining the Smart Extruder

…Let's take a closer look at the Fifth Generation's Smart Extruder.…First, we want to make sure that the…filament is unloaded and the extruder is cold.…Grab the extruder off the back, and pull it off the extruder carriage.…The Smart Extruder that ships with the Fifth…Generation MakerBots is pretty different than the previous generations.…There's a lot going on inside.…And since the units are factory sealed, disassembly is not recommended.…But let's take a peek at the various parts.…We've got four magnets here on the back…that help it attach to the extruder carriage.…

We've also got a wheel here on the side and that detects the filament.…And also the groove here on the side helps it guide down into the drive block.…The lever here on the side is attached to a spring…and a bearing, and that help keeps tension against the drive wheel.…The castle nut here is what attaches to the motor that's on the carriage assembly.…To put your extruder back on the printer, we're going to use the LCD menu.…So, we'll navigate to utilities, then system tools, and attach smart extruder.…