From the Project window, Select Toolpaths.
From the Toolpaths Tab: Select 3D Toolpaths: Create Machine Relief Toolpath.
Raster: raster angle 0, unless you need to avoid slamming into building edges.
Select: Tools: ( number each tool used )
Select...
Ball Nose tools are good for general architectural and site models, allowing roof angles to be cut with the same tool.
Set: Stepdown to the diameter of the tool in M330 board.
The feed rates, need to reduce tool breakage to a minimum.
Set: Z slices to Automatic.