After deciding on cutting the bowl in one piece, this meant I had to use the FabLab as they have a large flat bed CNC machine. This also meant I had to change my idea from cutting in circular motions, matching the lathe action. I had to cut my pieces on a spiral toolpath and therefore changing my aesthetic.
We also experienced problems with the size of drill bits and had to play with the settings and roughing to cut enough space to cut deep enough. All these changes were also due to different software being used by the FabLab to the soft-modeling department, adding time and delays to the making.
After considerable testing in blue foam and changing to settings, I decided on a final aesthetic and toolpath that worked. Once this had been achieved, I was able to cut it into pink model board. A denser stronger material that was better to cast in plaster.