Here are my very first tests and mistakes with my new MakerBot Replicator. This device is NOT 100% plug & play, there are lots of things to be aware of, including levelling, often cleaning the printer head, be aware of the fact that the software doesn't check if the object to build will be stable enough, principles of object stability, frictions when building complex parts of the object, incompatible files & things that have angles sup. than 45 degrees.