Nautilus Gears - One-sided bar with caps

I was fascinated by these Nautilus Gears, and I decided to change the bar in order to avoid having anything covering the top of the gears, sort of "spoiling" the spiral effect you get when they turn fast.

I made a bar on the underneath of the gears, and just two caps clipping to the shafts to hold the gears in place.

I printed mine in black PLA, 0.2mm layer height on my Arduino Materia 101.

The "Nautilus_Gear.stl" file is the original one by MishaT.