The original puzzle piece has two notches.
I reduced it to one.

Basic shape is a combination of 3 or 5 puzzle pieces.
Assembled puzzle is just right for putting sphere on it.

You can add pieces to create various shapes.

QIDI X-one 2

No

No

0.2mm

10%

As with the original, the fit between the pieces is pretty tight.
If the fit is too tight, increase the length of the stick slightly in the slicer settings.