I have modelized with Blender 2.83 real end mill with 3 flutes. There is 3 model, one without coating, one with TiN coating and one with DLC coating.
BLEND (Blender, filesize: 8.62 MB), OBJ (OBJ, filesize: 4.48 MB), FBX (Autodesk FBX, filesize: 1.85 MB)