This is a model of an M9 dagger designed using SolidWorks. Previously, when printing these small knives, they were often made in a single piece. However, the handle and blade would often come loose during use. Additionally, printing a single piece requires adding a lot of supports, which is too troublesome to remove and also a waste of materials. Therefore, I separated the blade and handle and designed it as a detachable insert. This way, you can print knives with handles made of different colors and materials. When in use, you can use 502 glue to connect them. In