My 3D files of Katarina's dual swords from League of Legends, based on a fanart model made by Silvia Garcia-Morato Moran on ArtStation.Perfect for your Katarina cosplay, the file was modeled in order to accombinate some 5 mm metal rods for better stability and, then, split into 7 parts for an easier printing and assembly.The files are available in both STL and OBJ formats.
Full lenght: 1000 mm;Blade thickness: 15 mm.
If there are any issues, please let me know in the comments!