As far as i know it means 4 layers over the height of 5mm, so each layer is 1.25mm. Seems like an error, if you configured your slicer for 0.4mm/layer you should have at least 12 layers.
Did you print it? Maybe that could clarify the issue.
By the way, what's the diameter of your nozzle?
Edited 1 time(s). Last edit at 09/26/2013 01:15AM by Neuromancer.