The "resolution" numbers you're seeing are a red herring. The quoted number is the height of a layer that the settings shipped with the printer are good for, no

The "resolution" numbers you're seeing are a red herring. The quoted number is the height of a layer that the settings shipped with the printer are good for, not the precision or accuracy of the print head. The X, Y, and Z resolution, as well as the extruder step size on a Solidoodle (and almost any other printer these days) is plenty good to print .1mm layers. The challenge in printing .1mm layers is that you're depositing a very tiny amount of plastic onto each layer, so variation like filament quality and moisture, temperature, and speed matters a lot more. Check out RichRap trying out different "resolutions" (layer heights) on his MendelMax printer with a Wade's extruder here to learn more about how layer heights work: http://richrap.blogspot.com/2012/01/slic3r-is-nicer-part-3-how-low-can-you.html http://richrap.blogspot.com/2012/01/slic3r-is-nicer-part-3-h...