Hello..
I spent a few months trying to make a fire piston from different materials. The only one that I got to work, was made out of brass.
Attached, is a simple drawing that should give you an idea.
The ideal lubricant was butter and parrafin 50/50.
Obviously you need a lathe and the fit needs to be free. The "O Ring" was sliced from a piece of rubber tubing that is used on fishing floats. Once you put the ring on , the compression can be felt. Its important that you get the correct combustion chamber size, or it will not work.
If your really good, you could add extra screw fitting on the end to keep spare rings or tinder.
Its amazing the look on peoples faces when I use this for lighting gas at work.
It takes about an hour to make one fire piston .
If anybody is really desperate ...I will gladly swop one for something...no cash please..
Hope this helps John
I spent a few months trying to make a fire piston from different materials. The only one that I got to work, was made out of brass.
Attached, is a simple drawing that should give you an idea.
The ideal lubricant was butter and parrafin 50/50.
Obviously you need a lathe and the fit needs to be free. The "O Ring" was sliced from a piece of rubber tubing that is used on fishing floats. Once you put the ring on , the compression can be felt. Its important that you get the correct combustion chamber size, or it will not work.
If your really good, you could add extra screw fitting on the end to keep spare rings or tinder.
Its amazing the look on peoples faces when I use this for lighting gas at work.
It takes about an hour to make one fire piston .
If anybody is really desperate ...I will gladly swop one for something...no cash please..
Hope this helps John
there have been a number of threads about DIY firepistons but a nice brass one sounds right up my street. right i'm off to my lathe, i hope i'm not in trouble with SWMBO when i get back
