Thanos sword from Avengers Endgame.

Lifesize replica (3m or 9.8ft).

Modelled mostly from official action figure accessory, model will be possibly updated after screencaps from the actual movie are out. There are two versions of the black sword back ornament, as I believe they might be asymmetrical for each blade. But feel free to chose just one version for both blades.

Cut into parts optimised for printing on Original Prusa i3 MK3S.Uncut STL for your own cutting included.

Includes space for 22mm tube (common central heating pipe dimension), for reinforcement.

Optimised for Original Prusa i3 MK3S, but you can cut the parts not fitting your printer's dimensions in Slic3r PE, Meshmixer or another software.

0.25 layer height was fine for the blade.I suggest you use more perimeters and more infill for the handle.