Since this is March -- when most of my university-related StepChanges (deadlines wherby there will be a change in conditions/considerations afterwards) are -- my time utilisaton would probably be seen as >97% if there was a Task Manager for it.

Some nice news is that most of the coaxial8or-specific things have arrived, including the coaxial8or heatblock itself.

Coaxial8or

Images of parts 3D printed from PCBWay's aluminium service are few and far between, so here's mine:

The first thing I noticed was how nice the first-layer surface was. All other surfaces look like a relatively smooth and slightly porrous-looking cast part. The first layer isn't perfectly flat, but hopefully the 1mm PTFE gasket can accomodate for this.

There is a slight amount of wiggle room for the cartridge.

The M6 thread is expectedly a bit bumpy.

Looks like good circular hole overhang performance. I now need to get these M4 tapped.

Measuring holes, it seems that they're undersized from the CAD by up to 0.2mm. For example, my 1.9mm filament holes are 1.68mm, the 3.3mm thermistor hole is 3.13mm and the 6.3mm cartridge heater holes are 6.13mm at smallest. With this information, I'd like to predict that the gap between the thermistor sleeve and the 360 degree input channels is 0.75mm IRL.

Other parts

SanBrother DDE x8, with one bag weighing 69.1g, down from the 88g of the current black BMG clones.

0.24Nm Nema 17 motors that I measured to be 22.8mm thick and a weight of 129.6g, compared to the 270g for Extruder1 or 360g for Extruders 2 - 4..

Unfortunately, despite me asking if mounting to a 3mm plate would be fine, the screws that come with the DDE are too short. These screws were flush with the underside of the plate. The max depth of threads on the Nema 17 is 4.95, so it's a close fit with 35mm screws which is the next standard length up.

The thickness of the DDE is 32mm.

As mentioned in one of the reviews, the large metal gear has a small amount of backlash, unlike my clone BMGs that use white plastic gears.