I find most cleaning patch material (flannel) is too light for good charcloth. Ticking and denim are about the best. Be sure it's all cotton, no other stuff. Do the Bic lighter test on a raveled edge and look to see if anything melts. Sure sign of dacron, nylon, or polyester. Get rid of it.
I cut the fabric (scraps, remnants, or thrift store stuff) in strips about an inch wide. You can even cut it into 1" squares--I do. I have a couple of old tea tins that look like little paint cans--tight fitting lids. Woodstain and such come in little cans like this. Save a couple, burn off the label and whatever is left inside. I stuff the cloth into the can pretty loosely, not packed in. But I fill it right up. There's a nail hole in the lid. I toss the can into the fireplace embers or a dying campfire. When "smoke" starts to make a steady jet coming from the hole, I make sure these gasses are lit to make a wee flame, sort of like what comes out of a carbide miner's light, if you've ever seen one. When the flame dies, all the gasses are driven off of the cloth. Take the can out of the fire and leave it til morning. DO NOT open it while it's hot.
Folks seem to buy largish flint chards to use with their steel. I seem to have a steady supply of used rifle flints. Small, convenient, free. Percussion shooters: befriend a flint shooter. I lay a square of char on top of the flint with the edges aligned. Then I strike the steel across the edge of the char and flint. I can almost always catch a spark on the first strike.
I use unspun linen fiber called "tow" for my tinder. I carry several tightly coiled "bird's nests" of tow, and fluff one up into a loose nest before I strike a spark. The glowing charcloth goes into the middle of the tinder and I hold it above my face and blow upwards into the tinder until it flashes into flame. When it does, I have a fire laid or a candle handy to catch the flame.
A trick I learned a bunch of years ago is to carry a "hair pipe" as part of my kit. Those are those long white bead-like things you can find on trader's row. They come in many lengths. I bought one that would fit in my fireworks container. I put that in my mouth before striking a spark and then use it as a blow tube to direct a jet of air into the tinder with the glowing char in the middle. It really helps keep the air where you need it and saves a lot of huffing and puffing. Next rhondy, get you one.
Just the way I do it. Works for me, and I'm getting too old to go experimenting to seek some minor improvement. Fire piston? Newfangled gadget. Never catch on. Parlor toy at best.
