Five, cut off the body: the cutting mechanism is winding forming, cut off the wire is the last of the spring drop of the processing action, cutting through the knife and the core to complete.

But actually the dialogue mechanism is slackening and breaking, and the unified flowing process of dialogue is cut off.

Early ideas to counter these issues included cut-off valves and colour-changing paint, but the designer settled on the pop-up mechanism, because of its ease of use.