1. Export your edited part from blender as a .dae file (collada). 2. Go into the jbeam of the part you modified. 3. Find the “flexbodies” section which should look like this: Code: "flexbodies": [ ["mesh", "[group]:","nonFlexMaterials"], [“your_mesh", [“your_group"]], 4. Where it says “your_mesh” is the part you need to replace with the name of your new mesh (the name of it in blender) 5. If you’ve changed the name of the node group in your part, you’ll have to change that too by replacing the “your_group” part with the new name of your group. 6. You’re done! The mesh should show up in game!