The classic among the tools with which a bottle closed with a crown cap is opened is the lighter. This is due to both the widespread use and the relatively simple design. If you pay attention to a few physical and biological factors when opening it, it will be even easier.
Properties of the pry tool
The decisive physical factor when lifting a crown cap from a bottle is the leverage. In principle, any elongated object can be used as a bottle opener if it
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- is stable enough not to break when the force is applied
- is long enough to develop sufficient leverage
- has an edge that can be attached to the crown cap without slipping
All of these properties apply to standard size lighters. However, with this type of opening a bottle, scratches from the metal prongs of the crown cap must always be expected. Therefore, hardly anyone uses jewelry lighters, which are also usually shaped in less elongated proportions.
Handling in the ball of the hand
The lever between the crown cap and the hand is created by a kind of thumb rocker. The lower end of the lighter sits under a prong on the crown cap. The lighter housing rests on the thumb about halfway along its total length. The support height must be above that of the bottle head.
The counter-bearing is formed with the curled index finger. The upper end of the lighter is "pinched " in the heel of the hand. If necessary, this clamping can also reach the ring finger. It depends on the length of the lighter and the size of your hands and fingers. The bones of the rocker (thumb) and the bones of the counter bearing (finger) create the resistance to enable leverage.
Controlled bruising unavoidable
In a strictly physiological sense, the skin and flesh above the bone are always crushed. By changing the position of the lighter, the point on the thumb and finger on which the force is exerted can be selected as free from crushing as possible. The thumb and the first phalanx of the finger have places that are barely "lined" by vessels.
Natural boundaries arise from physical conditions. Very small hands and fingers can develop insufficient leverage as a counter bearing and rocker. Large and fleshy hands and fingers often depend on pronounced skin tension. It cushions the squeezing intensity that leads to hematomas.
Helpful hints and tips
- Be careful not to damage the ignition head of the lighter. It should be stored in the palm of the hand with as little pressure as possible
- With short lighters less than five centimeters in length, the effort required increases several times
- Industrial punched crown corks can also have different holding strengths. If there is great resistance, try another point on the lighter
- Lighters often used to open bottles "fray". Switch sides and points as often as possible