In this article, we will consider a device with which you can light a tinder, cotton wool soaked in alcohol or a fabric, burned in a special way. Then from the lit fabric you can light a full fire. Let's watch the video.
Now consider how such a device works. With rapid compression of the gas, and in this case air, the temperature in the cylinder rises to 260 ° C. This happens because heat exchange processes do not have time to occur. If in the cylinder at this moment there is a substance that has a flash point below 260 ° C, ignition occurs. After the flash, the piston must be pulled out immediately. due to lack of oxygen, the tinder will die out. Now we will consider how the author made the fire piston and what materials were needed for this.
Tools and materials:
- 9.5 mm wooden dowel;
-15 mm copper tube;
-2 x 15 mm brass caps;
-15 mm coupling with external thread;
-15 mm plug with internal thread;
-Cuff;
-Hook made of brass;
-Metal box;
-Cotton fabric;
-Dremel;
-Burner;
-Soldering accessories;
-Saw;
-Drill;
-Vise;
-Epoxy adhesive;
-Oil;
Step 1: Making the Cylinder
Cuts off 15 cm of copper tube. Cleans the edges. He puts a cap on one end and solders it.
The following action, according to the author, is not required. He puts the sleeve on the tube with the cap and solders it. In the plug, in the center, drills a hole. Installs a brass hook in the hole and solders it. Screws the plug onto the coupling.
Step 2: Making the Piston
The author made a piston from a wooden dowel. I cut the desired length of the dowel (1-2 cm longer than the cylinder). He fixed the dowel in the drill, and the drill in a vice. He turned on the drill and, stepping back from the edge, made a seat under the cuff. Lubricating the cuff with oil, inserted the piston into the cylinder and checked its operation.
Drills a hole from the piston end. Depth 10 mm. A tinder will be installed in this recess. A cap is glued to the other end of the piston. In another version of the piston, instead of the cap, tightens the nut.
Step 3: Fabric Making
As a flammable substance, the author used a fabric that was made by pyrolysis.I put a cotton cloth in a metal box. I punched in the box lid, using a nail, a hole. He covered the box and set it on fire. First, smoke should go out of the hole in the lid, and then flame. As soon as the flame went out, the author closed the hole with a nail. The fabric made in this way ignites from one spark.
Step 4: Testing
A piece of carbonized tissue is inserted into a depression in the piston. Lubricates the o-ring with oil and inserts the end of the piston with the sleeve into the cylinder. With a sharp push, the piston is sunk. Pulls out the piston immediately. If the fabric smolders, then you can fan the fire. If it does not smolder, then the process repeats again.
To store the fire piston, fabric, as well as spare parts, the author uses a metal box.
