A Custom 3D Model I made with Blender based on the Minecraft sword model. There are pre made slots and pegs for the pieces to slide together. I recommend some glue but its a very tight fit.

Though I intended it to be a Dimond sword the only filament I had on hand was silk gold.

I also custom sized it in my slicer so the model may be very small when first imported to said slicer. I recommend a resize of at least 900% larger. Though even still that only give a blade about the size of a large dagger rather than a sword.