Just a little catch up on the documentation of projects. I was not in a rush as Cohesion3D has pretty complete instructions on the upgrade. It is a LightObject Z-table for my K40 laser.
I had pretty much installed the Cohesion 3D controler day one, but did not get the z-table installed until later. I cannot stress how easy the Cohesion3D mini has made using the K40 with the optinal LightBurn license. The upgrade to Z table required a high current stepper motor driver as well as an extra power supply to handle the extra power draw of the Z-table but the link above for instructions covered everything. I also got a spotting laser and some honeycomb bed installed. The honeycomb keeps objects from falling into the void. Testing shows it was very capable after the install. I have some minor annoyances to resolve like it homes the z-table between cuts which can be a time waster.
adding high current stepper driver. 
new Z-axis and spotting laser 
Testtube rack cutting 
TheVoid 
unassembled Z axis 
assembled Z-axis