Write a Villanelle (and Clean Your 3D Printer)

It's 2 AM on Pier 9 in San Francisco. The pier is empty, except for you, and the doors are locked.

You're wrapping up a print -- which you're sure will be The One. After each object is laid down in resin and UV-cured, you must run the Head Cleaning Wizard.

And when it comes out, this one is almost perfect. But perhaps -- just one more, before you go to sleep...

You begin to settle into a rhythm...

The tray is empty, and the door is closed.
Another object wrought from light and brine...
Another thin white cloth to Lethe goes.

We'll soothe their quiet heads while they repose;
We'll smoothe their clever heads, we'll make them shine.
Another thin white cloth to Lethe goes.

At rest, the mouths from which the nectar flows;
Now rest, great beasts, astir with heady wine.
The tray is empty, and the door is closed.

Beyond the window, black refracts the glows;
Dark water draws each scintillating vine.
Another thin white cloth to Lethe goes.

Our quiet robot softly beeps and lows,
Its head mechanic, though its dreams are mine.
The tray is empty, and the door is closed.

My neurons also long to drowse and doze.
Come home with me, my washed ones: it is time.
The tray is empty, and the door is closed...
Another thin white cloth to Lethe goes.