RepRap Printing Without Support Material (Video)

Here's a robot video that I found interesting:

Printing a hollow cube 30mm x 30mm x 30mm without any support material. The part is printed in PLA with 150 micron layers, 100% infill. Being able to bridge 25+mm gaps should allow me to print parts without having to use support material or a dual extruder machine. It's relatively easy to design support posts that can be removed later. None of the popular gcode generators have been able to automatically create practical support material.
By tempusmaster

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