How to Make Char Cloth with a Tuna Can – Miscellaneous Hacks

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How to Make Char Cloth with a Tuna Can

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I sacrificed my kids’ clothes and a can of tuna to make some high-quality fire starter! Here’s how to make a great batch of char cloth to add to your emergency kit.

WARNING:

This project should not be attempted without adult supervision and adequate training. Misuse or careless use of fire and flammable materials may result in serious injury, property damage, and/or death. Use of this content is at your own risk.

What Is Char Cloth?

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Char cloth is fire-starting tinder that has the ability to capture and hold a spark amazingly well, and for a considerable amount of time.

According to Wikipedia:

“Char cloth (also called charpaper) is a swatch of fabric made from vegetable fiber (such as linen, cotton or jute) that has been converted via pyrolysis into a slow-burning fuel of very low ignition temperature.

“It is capable of being ignited by a single spark that can in turn be used to ignite a tinder bundle to start a fire.

“It is sometimes manufactured at home for use as the initial tinder when cooking or camping and historically usually provided the ‘tinder’ component of a tinderbox. It is often made by putting cloth into an almost airtight tin with a small

hole in it, and cooking it in campfire coals until the smoking slows and the cloth is properly charred.

“Char cloth ignites with even the smallest spark, and is therefore commonly used with a flint and steel.”

Step 1: Materials You’ll Need

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This project can be done with items you probably already have around the house!

• Tuna Can

• “Lid lifter” style can-opener

• Nail, punch, or small screwdriver

• Cotton fabric

For cotton fabric, old T-shirts work very well if they’re 100 percent cotton. You can find this information on the tag inside the shirt. I also found that cotton balls work extremely well, and have become my new favorite!

Step 2: Cook the Cotton

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To make the char cloth cooker, just follow these steps:

1. If possible, use a “lid-lifter” style can-opener to open the can. This cuts the top off along the side of the can.

2. Clean out your tuna can and make sure it’s dry and free of contaminants.

3. Place four to eight cotton balls inside the can (or about four round pieces of cotton fabric from your T-shirt).

4. Replace the lid and press it back into place (note: If you cut it with a “lid-lifter” style can opener, it should press and hold together like it was meant to be!).

5. Flip the can over and use your punch to make a small hole in the “top” of the cooker.

Your cooker is complete and ready to go! Step 3: Fire It Up!

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The goal is to heat the container up over 752°F (400°C), which can be done in a variety of ways. For example:

• Use solar power.

• Place directly in an open flame.

• Any other outdoor method of inducing heat (outdoors because potentially harmful gases will be released and can smell up your house).

When the container gets hot enough, the cotton releases gases, including hydrogen and methane gases. As these gases are cooked out, the fiber becomes carbonized through a process called “pyrolysis.” This means that the fiber is charred but not burned.

You can tell the process is working because you’ll see the gas venting through the hole in the top of the container. These gases are flammable and may ignite. Don’t worry if they do because that’s normal and just fine.

The cooking is done when the gas stops and the flame goes out.

NOTE:

I’ve found that cooking them beyond the point where the gases stop and flame goes out can negatively affect their performance, so take the container off the fire as soon as possible.

Next:

• Place a layer of aluminum foil over the hole to prevent air from sucking back into the container.

• Let cool for about five minutes.

NOTE:

The container is very hot, so use protection on your hands to avoid being burned while applying the foil.

How Did It Turn Out?

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When the container has cooled off completely, open it up and the first thing you’ll hopefully see is that your white cotton fabric or cotton balls have turned completely black.

NOTE:

If there are parts that are still white or brown, it’s not cooked completely and needs more time on the fire.

To test your batch of char cloth, brush gently with an open flame. The cloth should capture the heat and form a small spark that will continue to smolder for an impressive amount of time. One cotton ball can last a couple of minutes.

By blowing air onto the spark, heat will transfer quickly and can engulf the entire cloth. This is the great advantage of the cloth. It can deliver a lot of heat when you need it (by blowing on it) or just hold a spark for a couple of minutes while you’re getting your tinder bundle ready.

In Closing

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Well, there’s how to make a batch of char cloth using materials from around the house. It’s great for emergencies, so go make a batch for your emergency kit right now!

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