This is the updated Ferret 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 but will improve the look under the chin.

I printed this on a MK3S+ at 0.3mm layer height no supports.