The exercise consisted in generating a pattern on a valchromat board sized 400 x 600 x 240 mm, by using the CNC Vertical Milling machine.  We explored the different effects and tools the 3-axis milling machine offers by simulating a number of patterns in RhinoCam for Rhinoceros. Our final proposal consisted in a series of nurbs inspired in water ripples, they were generated by heightfield and booleaned tools  into the panel, then this geometry was milled by a 26mm ball mill for horizontal roughing, and later detailed by the same tool as the previous process,  but used for the parallel finishing.