How to make char cloth.

STAINLESS90

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I searched and didn't find this as a topic so I figured I would share how to make char cloth for anyone unfamiliar with the process.

Step 1: Find a suitable container, usually a thin walled metal tin works best and it must be able to be sealed. Altoids tins work pretty well but almost any tin with a lid can be used even a tin can with the lid put back on or tinfoil pouches.
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Step 2: Punch or drill a hole in the bottom and top of the tin not larger than 1/8 of an inch. The hole size is very important it needs to be large enough to vent the gases from the process so the tin doesn't explode but not large enough to allow oxygen in which will cause combustion.

Step 3: Use a natural fiber based material. The item cannot contain any synthetic fibers as these will melt, 100% cotton, hemp, jute, or sisal all work though cotton is typical. I used some old cotton tee shirts for my material.
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Step 4: Place the material in the tin but do not pack it too tightly or else the material in the center will not properly char.

Step 5: Place the tin over an open flamed heat source. I am using my stove as I live in the city but I have even seen it done with a candle. The temperature just determines how quick the process will be. Only do this inside if you have very good ventilation and fans as it creates a lot of smoke.
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As the process starts smoke will begin to come out of the hole in the top and from the hinge gaps. White tee shirts are great to use as you can see when the material is done after it turns fully black (brown will not work and will just smolder and will be hard to take a spark). I prefer to turn mine over half way through to make sure both sides get done. The process on my stove on high heat takes about 8-10 minutes but can take up to 40 minutes depending on the heat source.
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The smoke will probably ignite as it is a flammable gas this is normal.
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The process is complete when you no longer see smoke coming out of the tin.

Let the tin completely cool before opening or attempting to remove the char cloth as the residual heat will make the char cloth light instantly causing a small flash fire.

The results from about half a medium tee shirt which should last for quite a while.
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Be safe everyone and I hope this helps someone.:D:thumbup:
 
Thanks for this. I have been thinking of making a batch for a while now. This will get me going. Did you fit a half of T-shirt in the tin for one go?, or did you make several batches? Thanks much. RP
 
Thanks for this. I have been thinking of making a batch for a while now. This will get me going. Did you fit a half of T-shirt in the tin for one go?, or did you make several batches? Thanks much. RP

No it took about four batches for that amount. If you try to do too much at once it will either take way too long or it won't be quality char cloth. Also if you have a grill you could probably use that as well, this stuff produces a lot of smoke.
 
This has been on the to do list for a while. Nice write up. Any advice for storing it in humid climates? I would imagine anything airtight would work right?
 
They are kind of expensive but I would recommend any pelican type waterproof case. I live in Nevada so humidity isn't an issue so I just keep it in a plastic bag. Also throwing a silica gel pack in the container or bag would probably eliminate any humidity worries.
 
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It stays pretty humid where I am, and I've never really noticed it to make a difference. Just a little ziplock works. the little peli cases are not air tight enough to worry about blocking humidity. I've got a big gel pack in a 1060 case, and it needs refreshing every four-five months.
 
I have actually been experimenting with moisture and char cloth since yesterday and it seems that moisture itself won't ruin the cloth. As long as you can dry it out, possibly in the sun, you can still use it. I soaked some in the sink and tried to dry it in my shirt but it was still too wet to take a spark so I left it in the sun and after it dried a bit more it lit right up.
 
Like you found, it only needs to be "dry" as in atmospheric. wet is going to be a bit of a problem, but as you say, it dries alright. I carry two types of "tinder helper" char which is good for dry weather when you just need that little extra to get the sparks going, and tinder-quick tabs for "fire now" situations. Prep is still key, but char can get things over the line if the tinder isn't 100%.
 
Nice write-up! I really like that charcloth:

-lights with a much colder spark than jelly cottonballs (not knocking them, they're in the arsenal, too).
-doesn't blow out in the wind.
-supply can be replenished in the field.

Prep is still key, but char can get things over the line if the tinder isn't 100%.
:thumbup:
 
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