Update 11/18 fixed the Flapjack file so it should slice properly.
This is the updated Flapjack collapsing staff with replaceable core and segments.
The top core 7 and possible core 6, might need tape to make the connections stiffer.
Print Settings
Layer height and infill at your discretion, I use 0.3mm layer height and 7% infill
Make sure your line width in cura is set to 0.5mm and extrusion width is set to 0.5mm in prusa slicer for perimeters
Support aren't necessary
I printed this on a MK3S+ at 0.3mm layer height no supports.
The author hasn't provided the model origin yet.