Fractals in gem-gum nanomachinery

Limited fractal character in assembly levels

Due too changing physics over size scales (See: scaling laws)
there is quite some deviation from a self similar (aka fractal) design when going down
the assembly levels (which might be implemented as assembly layers) of a gem-gum factory.
That is: Lower assembly levels are not quite scaled down versions of the assembly levels higher up.
The similarity of macroscale style machinery at the nanoscale is just a similarity in first approximation.
Taking a closer look reveals that there are huge differences.

About fractal branching networks

For one reason why tree like or lung-like or blood-vessel-like designs are not necessarily a good approach see:

• Fractal growth speedup limit

Fractal design for system redundancy

See: Resilience boost by fractal design – e.g. in muscle motors