3D routing uses the full ability of the cnc router,
to produce complex shapes in the material being cut.
A 3D cad (computer aided drafting) drawing or 3D clip art is needed
so that the cam software (computer aided manufacturing) can calculate
the tool paths needed.
The 3D drawing or clip art is then
opened in cam software.
A machine programmer uses the cam software, to input information
about the diameter of the router tool, how fast it will move when
cutting & how deep it will cut each part of the item.
After all this information is input, the programmer uses a part
of the cam software called a post processor.
This will write a G code program that the cnc router will use to
cut the item.
A cnc router has 3 axis of movement,
X axis moves the cutting tool along the cutting table, Y axis moves
the cutting tool across the cutting table & the Z axis moves
the cutting tool up or down into the item being cut.
3D cnc routing can move all 3 axis at the same time.