Hey there, so this is my take at Aerondight from the Witcher 3 games.
All the pieces fit together using pins. You can either print the pins or for something stronger, i used #8-32 x 1in machine screws and just cut off the screw heads.
Almost every piece can be printed without supports.
*FAIR WARNING* This is a very long sword so please beef up the wall thickness and infill for strength. I used 25% for the blades and they are holding up great. I tried to save time on the handles and printed the with 10% infill and it snapped, forcing me to reprint them.
So far I only have it printed but as soon as its all sanded and painted, I will upload more pictures.