1. Hmanrua hmang rawh: Bottle cap a tight lutuk chuan bottle opener emaw rubber gloves emaw hmangin friction tihpun i tum thei a, hei hian bottle cap chu unscrew a awlsam phah thei a ni. Chu bakah, bottle cap chu towel lum tak hmanga wrapping leh thermal expansion leh contraction principle hman hian bottle cap chu a tisscrew thei bawk.
2. Kut chakna tihpun: Kut chakna tling lo tan chuan i kut ruhte exercise emaw, midangte hnen atanga tanpuina dil emaw hmangin bottle cap chu i unscrew thei ang. Chutih rual chuan, bottle cap unscrew-naah posture leh angle dik tak i vawn reng theih nan enkawl a nih chuan kut chakna pawh a hmang tangkai thei bawk.
3. Bottle cap leh bottle hmui inkar adhesion chu deal la: Bottle cap leh bottle hmui chu a inzawm chuan bottle hnuai lam chu zawi zawiin i pat hmasa thei a, a nih loh leh bottle chu a sir lamah i dah thei a, bottle cap part chu tui lum takin i silfai thei bawk a, chu chuan adhesion chu a ti nem thei ang. Tichuan, bottle cap chu unscrew tum ang che.