I printed in PETG (in translucent blue) with supports (see photo and 3mf file). Nothing special on printing - I think most anything will work - I used variable level heights to speed print (I usually do), and default of 15% infill.
I created in Fusion 360, exported the STL, and sliced with PrusaSlicer. I'm suppying all the files to enable you to have fun at any level you like: the STL, the 3MF (PrusaSlicer), and the F3D (Fusion 360).
Photos show the supports for printing, a side-by-side of two original handles plus a new one, and a close-up of the new handle.
The author marked this model as their own original creation.