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.
I haven't been working on the files at all lately, but I did just finish building the lulzbot. It's printing but needs some tweaking, as it wasn't built by the loving hands of the lulzbot team. I will update this thing and the other one helmet when I do start work on them. I can't promise they will be done, let alone started in a month. Making free models for the public to enjoy is not my full time job. I would suggest printing the models that are already available, as they do combine to be a helmet. Printing larger parts with curves don't tend to be easy to design for all printers.