This is a test print for the Collapsing Katana. If you can print it with NOTHING attaching the rings together, then you should be able to successfully print the full sword.
The test print is a total of 24mm high so I change settings every 8mm(3x) then compare the changes until I achieve the best result. The settings that will have the most impact are; flowrate, retraction distance/speed, coast, wipe, and extra restart distance. You may also try; seam location, speed, temperature, and z-hop.
I have detailed instructions on how to print collapsing swords on my website.