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 have printed the engine including the gearboxes, but at 130% scale using my 4 year old Ultimaker.
So I could use 4 mm silversteel for most axisses and 13 mm bearings.
Some of the larger parts I splitted into two parts using Netfabb basic and glued the parts together
Sofar I cannot find the exhaust piping as on your overview picture .
I will upload some pictures soon
Please provide me with the exhaust piping stl-files
Wim de Groot