The thermos cup can not be opened. How can the lid of the thermos cup not be screwed?
With the key (the other sheet metal is inserted, some wide, not to hurt the cup cover) the gap in the cup cover and the cup mouth gently pry up a whoosh of air will go, gently twist open easily.
With strong twist.2, put the cup upside down, banging on the bottom of the cup several times, and then tighten the cover of.3, is generally not open in the cup is negative and can put the cup in hot water, such as a cup of water temperature, volume expansion, it is easy to open.4, rapid heating cup cover so, the gap between the.5 and the cup body, the refrigerator, take out after the shower with hot water in the lid (just make sure you can open the lid),
The glass (also on lid) drill a small hole, so that the "leak", reached inside and outside pressure balance. You don't let the cup lid too closely. (hint: try to do this) insulation cup with metal components, do not put in the microwave heating, will fire.
