Any 3d Printer can print this. No support structures are needed.
Since the kit is Lego compatible, you can print any model you like. I suggest starting with a tower that sits on (non-Lego) base plate. Most objects are fairly easy to print.
The models are fairly sturdy, but since PLA is not very tough, you could consider using an expensive enhanced PLA that has the strength of ABS.
I am an associate professor of educational technology at TECFA,, University of Geneva.
I do teach some digital design and fabrication to edtech students.
I do share some of my (limited) know how in http://edutechwiki.unige.ch/en and http://edutec...