광석 공장 (곧 단종)

The signal lights syncing with each assembly step is such a clever touch—it genuinely feels like you're running a tiny brass-and-copper factory. I caught myself watching the yellow warning light cycle for way longer than I planned. Sad it's retiring, so grab it while you can.

Watching the red and green lights blink in sequence as each piece snaps into place feels like running my own little machine. The amber warning glow when something’s misaligned is a nice touch that keeps me double-checking my work. Sad it’s retiring, but glad I grabbed it before it’s gone.

The signal lights syncing up as I connected the pieces was the coolest part — that red-green-yellow sequence really sells the factory vibe. It's a bit fiddly to get the alignment right, but the retro lighting effect makes it worth the effort.