[Octolapse] How to get stabilization extruder raised on Z?

I've seen Octolapse time lapses where the extruder is hovering several inches above the model as it progresses. What are the settings to get this effect? When I use Stabilization->"Fixed - Extruder at Center", the print head doesn't move the Z before taking snapshot.
Thanks!
Thor

I've never seen one of those, but it sounds cool!

The only way I can think of is to use the Gcode trigger, so select that option. Within your slicer you will want to add something like the following to your layer change script:

g91; Set relative axis mode
G0 Z5 ; move up 5mm, you can move up as much as you want
g90; This is probably necessary in Octolapse V0.3.4 (haven't tested). Won't be necessary in the next version.
snap ; send the octolapse snapshot pseudogcode
G91; Back to relative
G0 Z-5; move back down
G90; set absolute coordinates

There may be a way to write the z movements conditionally in your slicer to prevent it from running into the top of the Z axis for a tall script, but I'm not familiar enough with Slic3r macros to do this off the top of my head. With the script above, just make sure your model is low enough so that the z lift doesn't go too high.

Let me know how it works!