When sectioning in Z, alignment features may be added with the use of the draw function. This sectioning process will be outlined step-by-step below.
STEP 1: Slice the .stl file. Click the green check box (dismiss the error report dialog)
Error Summary “Z dimension of slices is larger than maximum”
STEP 2: Determine which layer you want to section the part at. Below this layer will be
the bottom section and above this layer will be the top section.
STEP 3: Display the layer from step 2. View the layer in the Top View
For more information, download the full best practices document here.