CO2blast

I'm currently trying to import a custom mesh created in 3dsmax 2018 into SSE. I have a nif file, but hav no idea how to correctly set it up. Any advice? The mesh is around the size of the Dwarven Greatsword and should function like it. I can handle to Creation Kit, but Nifskope prevents me from knowing how to get a custom-made mesh with textures into the game. Thank you for any help provided

If any of y'all have the ability to, do you know how to setup a nif file in nifskope to act as a weapon in Skyrim? Specifically, I have a nif mesh which i would like to import into Skyrim, working off of the size of the Dwarven Greatsword, as it should be quite similar to it, and my question is: how to setup the nif in nifskope to function properly in skyrim? Thank you (P.S. if there is a way to directly import it into Skyrim Special Edition rather than converting it from oldrim, that would be a great help)