Even ridiculously closer now!

The wiring is basically done; really all that's left is to level the print bed. But I also need to recheck every distance to make sure the whole thing is still square, and check every board individually to make sure they're wired up okay.

The wiring was a pain, though - I was particularly short on wire that was thick enough to handle the high currents that could be going to the steppers and heater coil, so in the end every one of them used a different type and colour of wire to every other one. Sigh. Cable ties are liberally applied in an attempt to keep the ratsnest under control.

The wiring to the moving carriage at the top is all tied to a loop of the PLA filament, which is springy enough to keep it out of the way. I had to superglue a bit of scrap acrylic to the x carriage to provide somewhere to cable tie the filament to; I'm fairly confident it'll be robust enough. Also, every wire to the extruder head has some kind of connector in-line before being attached to the guide filament; hopefully this will let me detach the entire head without too much fuss in the future. When it inevitably goes kablooie.