These parts will slip over the top of the MK4 top Z rod mounts. Then you can set the MK3 light bar down on the adapters.
uses minimal supports I recommend organic supports set to 0.2 z offset when printing at 0.2 layer height.
***NOTE***
These adapter blocks DO limit the X travel slightly, only at the very top of the Z axis.
The author marked this model as their own original creation.