4d_printer

Is it possible to specify the height of the extruder when travelling and not printing? E.g. higher than the z-offset value? I am trying to print a second colored layer at a lower height than a first layer, so I want to make sure nozzle nozzle clears any existing prints/walls from my first print.

I am trying to engrave 0.25 mm text into a 2 mm back plate and fill it in with a different color filament later. Without z hop (top print), there is digging between some characters (e.g. "2" to " 3" and "3" to "A") but the overall surface is good. When I enable z hop (middle) there is some random digging, and the surface appears more dotted/patchy? I didn't notice a significant difference with z hop only over printed parts (bottom), as the top layer is still not very good. In all cases I have ironing top layer enabled. Is z hop supposed to affect the top layer like this?