This was fun to make! a lot of the settings are presets from my a1mini but I wanted to push it to the limit (for a newb) and I am happy with the results! (I used a brim on mine because I had a couple of failed prints from the moving Y axis. Otherwise you should be good to go.)

This flail is approximately 19 inches in length. I made a plate with solid flail and one that is hollow so that it won't waste as much filament. I have other ideas to add a peg in between the spheres to help hold when you glue it.

Inspiration taken from @billrobland and his chains and @grwang41 and his bone pen.