The docs seem to suggest that there is a jacketing function in 4.21. I’m in 21.1, I have a part I’ve imported from Solidworks, it’s brought it in as a bunch of static meshes. I’ve selected them all, per the instructions in the docs: https://docs.unrealengine.com/en-us/Studio/Datasmith/HowTo/Jacketing but I’m not seeing the option in the right click menu, either in the viewport or the world outliner: