Arthur Sacek didn’t stop building Lego CNC projects after his first success. He continued to develop new projects. He also built a new version of his LEGO 3D Milling Machine. It was developed to participate in the WRO 2011 – Abu Dhabi in the “LEGO Robotics Experts” area.
Sacek made several improvements to the design, but the most important improvement was writing the software to run under leJOS with a linked PC. Operating the machine under leJos allows Sacek to create larger more complex programs. Now there is no more file size restrictions imposed by the Lego NXT memory. All the data is stored in the computer and is sent out in small packets of coordinates to the NXT every loop. LeJos is a version of the Java programming language designe for Lego Mindstorm
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The Lego 360 degree milling machine can create complex 3D objects that were not possible before.