Reshaping of Voxel's Dread Pirate Roberts Sword Blade so that it can be printed vertically on the Centauri Carbon and have a #8 threaded rod inserted through the blade, such as https://www.homedepot.com/p/Everbilt-8-32-x-3-ft-Zinc-Plated-Steel-Coarse-Threaded-Rod-2293/332735404. Get the rest of the model from his posting.

Print the regular version, if the hole is too small (it shouldn't be), use the tight versions.