This fire piston uses either traditional thread gasket or O ring . Its realy an easy Duo Seal fire piston.
Since cylinder of smaller diameter (3/8") is used, its easier to produce required pressure. Means its easier on hands.
Step 1: The Cylinder
Step 2: The Cylinder
Step 3: The Cylinder
Step 4: Operation
Insert it in cylinder and insert full length 2 - 3 times to lubricate inner wall of cylinder.
Put cylinder on some support. insert piston and give sharp quick thrust. It must reach to the sealed end of cylinder.
(This is what gets impossible for larger diameters of cylinder. For 3/8" its very easy)
Withdraw the piston quickly. (If it takes long to withdraw the ember extinguishes due to lack of oxygen)
You will have ember. Dig it out from hole with some pin and put it on tinder to make larger fire.
One thing to be noted you might not be successful of first attempt. Still its alright. It needs practice.
Don't forget to put your comments.
Step 5: I Made One More....its Tiny
It too works like a charm.