Positional assembly kinematic loop

Look at a 3D printer or some subtractive manufacturing machine like a CNC mill. There is:

• a workpiece holder of some sort
• a tooltip holder of some sort
• a frame connecting the two somehow
• actuators within that frame facilitating controlled motion that is minimally cross coupled

This sequence forms a kinematic chain.
And once the tooltip contacts-onto and presses-into the workpiece a loop is closed.

A progression in "expanding the loop"?

Regarding the bootstrapping of advanced atomically precise manufacturing one idea along the incremental path is to introduce a positional assembly loop quite early on and then scale it up.

Progression:

• Existing natural enzymatic proteins as example
• Catalysis construction kit approach (which includes the less ambitious functional block construction kit approach)
• Printer approach (See: Foldamer printer) (and less so robotic AP block handling approach)
• Full on advanced productive nanosystems

This "expanding the positional kinematic loop" approach pushes
the material capability technology levels pretty hard pretty early on.
So it's a quite direct side of the incremental path.

Related

• Incremental path
• Foldamer printer

---

• Positional assembly redundancy blockade
• Fat finger problem

External links

• https://en.wikipedia.org/wiki/Kinematic_chain