The diameter definitions are same as the slotless motors. The tooth width Twi is the tooth width at the stator ID and the tooth width Two is the tooth width at the slot bottom. So is the slot opening and the option of parallel slot openings is available.  The tooth radii definitions are as show below. Lstk and Dpm represent the stator stack length and the magnet length in the axial direction respectively.

Radius definitions in teeth and slots

The tooth tip thickness and tooth tip slope height are defined as shown in the image below. Parallel slot openings are shown.

Tooth tip height definition

The images shown below demonstrate the almost photographic type of models that can be created using Samarium. It can model the stator skew easily as a visual aid to the designer.

Cross section in 2-D mode with lighting

Zoomed in 3-D mode with lighting (stator skewed)

Rotated in 3-D mode with lighting