MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
Yes, the kit Alex sells comes with a piece of plastic that holds the leds. His tutorial videos show how to assemble them. I will be posting the printable holde for the matrix soon, it hold the leds on a bend.