Print all three pieces and assemble with glue for a permanent fit.
The long arm is the longest I could get to fit on the MK4 build plate by rotating to about 322.5/37.5 degrees diagonally. The default length is short enough to fit on the print bed along the X axis.
I recommend printing the long version if possible to ensure necklaces are hanging high enough.
Clearances are set to 0.2mm, but are editable in the parameters in the Fusion files included.
The author marked this model as their own original creation.