Printing Again - Spool Arm

I spent the majority of the weekend getting the printer running again. The first print with the external extruder was new spool arm, to hold the filament spool up away from the extruder.

It actually turned out really nice. It took up most of the width of the bed and had some long straight lines, but printed without curling. I'm quite pleased.

Since this is going to be load-bearing, I upped the infill to 40% (I've been printing most things at 30%), and printed with three shell perimeters, up from my standard two shell perimeters. It feels really solid. I think I might do three perimeters more often going forward.

Original File

Nozzle: 230C
Bed: 100C
Chamber: 50C
Layer height: 0.2mm
Speed: 40mm/s
Time: 11 hours
Material: Hatchbox ABS

Fans Installed, All Components Properly Installed

Kinda hard to tell, but the PEEK fan and the layer fan are installed and operational. I left the wire connections in "temporary" status because I'm planning to splice in at least one more fan and a couple LEDs.

This picture is taken facing downwards from just above the extruder hot end.

Here's the assembly with all errors-to-date corrected:

The spool and the extruder cold end are oriented correctly, the effector platform is flipped right-side-up and the hot end reinstalled correctly. The fans are installed for the first time.

Time to calibrate!

Extruder Cold End

Lots of errors here:

The extruder motor on the Rostock Max hangs below the top plate, in order to keep the distance between the "cold end" (the extruder motor) and the "hot end" (the heated nozzle) to a minimum.

The bracket is installed correctly, but I put the motor in backward. :-/

Here's what it's supposed to look like:

The white "gear" is a jog wheel so I can adjust the filament position manually. The red lever disengages the tension on the stepper motor so I can hang the filament out quickly if I want to.

After the extruder was in place (but not oriented correctly - that came later) I went on to install the spool holder and top plate - also at the wrong orientation:

The cold end and the spool holder are supposed to line up, like this:

But I didn't get it fixed until after my first couple prints were completed.

In my defense, the printer kit is set up so it's easy to set up a second extruder and spool (and at least one guy has gotten three extruders and spool operating at the same time).