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Rain or water does not effect the working of a fire piston.
Shake the water off and out and use it.
A fire piston is a small tool that works by rapidly compressing air.
The compression increases the temperature of the air which ignites your tinder.
I found an Abstract which states a fire piston reaches 750 kelvin = 890 degree Fahrenheit.
A fire piston with a narrow diameter and long stroke can get very hot
with just a small amount of effort, but might hold less tender than
a larger piston that would require a little more effort but can hold more tender?
There are many How To instructions to be found,
One instructional and video can be found here: MagLite fire piston
Scientific Principles that Make a Fire Piston Work
Some videos
Fire pistons are sold, but they are not cheap.
there's always another way
Randy
Shake the water off and out and use it.
A fire piston is a small tool that works by rapidly compressing air.
The compression increases the temperature of the air which ignites your tinder.
I found an Abstract which states a fire piston reaches 750 kelvin = 890 degree Fahrenheit.
A fire piston with a narrow diameter and long stroke can get very hot
with just a small amount of effort, but might hold less tender than
a larger piston that would require a little more effort but can hold more tender?
There are many How To instructions to be found,
One instructional and video can be found here: MagLite fire piston
Scientific Principles that Make a Fire Piston Work
Some videos
Fire pistons are sold, but they are not cheap.
there's always another way Randy