This is my second ever design and it took me quite some time to do. Like my logo I did, I have no idea if it works or not, I am gonna assume not, if you do print it, let me know what needs changing, I designed it to scale but when I chucked it in a printing program it scaled it to the size of a key ring for some reason, not sure if that will be universal though, again, let me know.
While I am sure it will work on some printers I think it would be best done if you chop it in half in a slicer and then print the two halves flat otherwise you may struggle.
I imagine it will be quite sharp once done, particularly at the point so you'll have to sand it down to dull it and make it safer. If it turns out it simply can't be done please let me know and I can separate the blade from the hilt with a registration tab to make things easier.