# Iteration 7
## Did
- gen_mobile_gantry.py -> mobile_gantry.urdf (HTTP 200): 4-wheel chassis + a compact 3-axis gantry portal on
  top (X rail + Z + vertical Y drop + tool). Cameron's "access-gantry on a mobile base" idea. Renders clean.
## Two mobile options now exist
- mobile_base.urdf   = wheeled base + vertical lift + articulated 4-DOF arm (reach/dexterity)
- mobile_gantry.urdf = wheeled base + rigid XYZ gantry (precision/stiffness, the fetch-like idea)
## Next
Wire the printable carriage_plate into the motorized gantry; add differential-drive detail; combined hero render.