Hi Macarms,
I only know of the one set of videos showing a MASSO being used for 5 axis machining.
That is the one you have already found.
I think you are mistaken about my comment on the video.
What I said was, and I quote:
Very interesting about 5 axis tool length.
By which I meant that it was interesting that the tool length was referenced from the point of articulation unlike normal machining.
With regards 5 axis machining and tool changers I really don't know but I imagine that if all tools were set to the length specified in the Gcode in a tool changer collet then tools could be changed.
MASSO does not do the kinematics in the controller and so requires the CAM software to work everything out before hand.
If your tool length is different from that specified in the Gcode file your machining will be wrong.
While I can see how the tool length affects machining when the Z axis is articulated as in the video I don't know what the effect is when the A & B axis are on the table surface.
Basically I do not know as I have never done 5 axis machining.
There are no special 3D views for 5 axis or any special 5 axis features.
MASSO will do what it is told in Gcode
Hope this help
Cheers Peter