You can find cosplay 3D printer files in various places on the web. First, check websites like MyMiniFactory, which has a special cosplay STL files hub. Images of people holding the final product are displayed, so you can get a really good idea of how it should look. Next, try the associated software that comes with your machine for some basics that will work quickly. Finally, if you can’t find what you want, you can always try making the file yourself using a program like SelfCAD.