Contents Part III: Model Tutorials | Chapter 2: Create an LS-DYNA Input Deck for a Simple Inflatable Airbag | Print page 2.5. Sew Outer Edges of Bag TogetherChoose FEM > Element Tools > Duplicate Nodes from the menus.Click Show Dup Nodes.Click Merge Dup Nodes.Click Accept.Activate Show Free Edges. « 2.4. Prepare Outer Edges of Bag 2.6. Trim Hole for Inlet »