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Note  The term “leveling” isn’t a correct term. We don’t level the bed, as in making it even with the horizon (or floor); rather we make the print bed the same distance from the X axis across the bed. That is, the hot end is the same distance away from the print bed at all locations. While tramming is the correct term, many vendors, including MakerBot, use “leveling” and “tramming” interchangeably.