Yes, it is generally best to set the layer thickness to an integer multiple of the full step movement. It is also best to design parts so that features like horizontal steps that occur at different Z heights are a multiple of the layer thickness.
My printer has a full step Z resolution of 20 um, so I use multiples of 20 um to set layer thickness. That means I can have 0.1 mm layers, or 0.2 mm layers, or any other multiple of 0.02 mm but I don't use 0.15 mm layers. When I design objects in CAD, I plan the layer thickness that I will print (often 0.2 mm) and then design parts so that top layers will land on 0.2 mm multiples.
The reason is that the absolute accuracy of microstepped positions is not very good, but the precision of full steps is good because the driver transistors are supplying the same current at each specific microstep position. The 4th microstep will have the same current at each full step and the 5th microstep will have the same current at each full step, but you can't expect the 4th and 5th microsteps positions to be exactly 1/16th step apart (assuming 16:1 ustepping).
Ultra MegaMax Dominator 3D printer: [
drmrehorst.blogspot.com]
