Up! Printer, Extruder Head

I received my Up!

I'll be photographing the tasty bits, unboxing, assembly and prints for everyone to see. First, I'll start with the print heat - arguably the most complex piece of hardware on the machine. It needs high temperatures in some places and cool temperatures in others. It needs to be reliable and fast if it wants to win my satisfaction.

Here's details about the print head.

The print head design is very compact using a combination of custom machined parts and printed  parts. The plastic enclosure on top houses connectors for the temp sensor, cartridge heater, fan, stepper motor and input ribbon cable. There's a printed lid for the enclosure that snaps into place and hold the cable orthogonal.

The fan is mounted to a heat sink with a single screw (but feels extremely rigid). The heat sink keeps the filament tube cold until it enters the liquefier. The liquefier is the aluminum block with the wires going into it.

Here's a few more shots.

Above: You can just barely see the idler wheel peeking out.

Below: Wind barrier below fan. The small cap screw in lower left corner mounts to the printer.

Above, PCBA with connectors for stepper motor, fan, temperature sensor and heater.

Other than 1.8 degrees, I am unclear on the specs of the stepper motor. Honestly, I don't care either so long as it works. Quality of materials and design appear to be excellent. I will report  more as it  gets used.