Purpose: Create subassemblies from objects that previously were not subassemblies. It looks like this: For example, one would attach this craft To this craft: If one were to choose to use the first craft as a subassembly, they would follow these steps: Select root tool (shown earlier) Click on part with desired attachment node twice If that doesn't work, click on another part and then on the part with the desired attachment node. Return to "Place" mode Enable Advanced Mode in the right-top corner Open "Subassemblies" tab Shift-Click on the new root part, then drag to subassemblies drop zone. Save subassembly. The subassembly is now created. To attach it to craft 2, keep the subassembly folder open. Click on the subassembly that was saved previously, and drag to attachment node.