I first saw a fire piston used on Les Shroud’s show, I loved it. I looked them up on the net and came to the conclusion that they would indeed be difficult to make. I have enough other projects that I’m working on to try to make one of these right now.
I like neat toys as much as the next guy, but I also want practical things. And to me a Bic is it.
But you are right it would be a cool thing to play with & people would like it.
I still want one, but they are too expensive for what they do. The ones I’ve seen on the net are like works of art, they are beautifully made. I’m sure the guys making them have a lot of time into making them. You are not only paying for a (very cool) way to make fire, you are paying for the craftsmanship of the item.
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You can run, but you'll only die tired.