MakerBot isn't the first self-replicating 3D printer -- that spectacular distinction went to the RepRap Darwin back in 2008 -- but that doesn't make it any less awesome that the $750 machine is now able to produce its own frame. With a month's labor, owner Webca was able to create the entire plastic chassis you see above, using a second MakerBot constructed of the traditional wooden parts. Without knowing how much goop went into the project, it's a touch difficult to say if the method is economical, but there's nothing to keep you from trying the same. Best of all, Webca decided to share his plans with the world -- you'll find instructions for all 150 pieces at the source link, a month off of work in your wildest dreams.