What to do with worn out flints?

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awreis

40 Cal
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I have several worn out flints. Is there any use for these other than maybe with a steel to start a fire?
 
Careful use of a diamond wheel in a dremel tool can re-shape some badly worn flints for further use. Just be sure to wear eye protection and a mask to prevent breathing in flint dust which can harm your lungs.
 
It depends on how short they are. I re-nap the edge until they are to short to work. Put the flint in leather then a bench vice. Lay a piece of brass rod on the edge. Strike the side of the rod with a little hammer shooting for an angle of about 40*. It does not take much force if you pick the right spot. It should knock a nice chip out of the edge. Try several places to get it to chip and set up a shelf for the next chip. The angle determines the length of the chip. You will get the hang of it quickly. Wear safety glasses.

Once you get it down you can sharpen flints in the cock jaws with you brass rod.
 
I don't throw anything away and that includes flints. As they wear just wedge them out farther in the cock by putting something behind them to hold them firmly in place. You can use them in your smaller locks. Attach the smaller ones to something to use as a handle so you can easily hold them for fire starting.
 
They get lost in one of my rock gardens:
IMG_4209.JPG
 
I chuck them in the weeds. Not worth the trouble to attempt to knap or resharpen or whatever. Toss and move on.
 
Doesn't take much flint (so long as you can keep a decent grip) to have a good flint for a fire kit. I have a raw piece of flint that isn't the right size for a lock in my kit...sparks well enough to catch the char-cloth on a regular basis ;)
 
unless they are rounded you should be able to pressure flake a new sharp edge using an antler or copper wire to push off micro flakes
DSC03195.JPG
the leather on wood is to help hold the flint while pressure flaking

if you watch the below you will see how I knap a new edge (and some fun shooting)

 
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