Use the spark wheel from a used up throw away type lighter. I prefer the ones with straight across milling.
Find a piece of brass brazing rod that is a good fit for the center hole. Bend a short right angle on the end of the brazing rod. Put the spark wheel on the right angle with about 3/32 protruding. Grip the longer leg of the brazing rod horizontally in a vise with the wheel resting in the top of the vise jaws with just enough room to rotate. Peen over the short leg to form a mushroom head to hold the wheel while still allowing it to rotate freely.
Cut the long leg to your desired length and hold it in a small pin vise to use.
Using the same idea you can make the wheels by center drilling and cutting off short sections of drill rod. Cross cut them with Liners or fine checkering files. Wire them up on some binding wire and heat to critical temp and quench. Clean up the scale and use as is or anneal to 325 cent. if you wish. This way you can have teeth spacing and wheel width to your own desire.
Find a piece of brass brazing rod that is a good fit for the center hole. Bend a short right angle on the end of the brazing rod. Put the spark wheel on the right angle with about 3/32 protruding. Grip the longer leg of the brazing rod horizontally in a vise with the wheel resting in the top of the vise jaws with just enough room to rotate. Peen over the short leg to form a mushroom head to hold the wheel while still allowing it to rotate freely.
Cut the long leg to your desired length and hold it in a small pin vise to use.
Using the same idea you can make the wheels by center drilling and cutting off short sections of drill rod. Cross cut them with Liners or fine checkering files. Wire them up on some binding wire and heat to critical temp and quench. Clean up the scale and use as is or anneal to 325 cent. if you wish. This way you can have teeth spacing and wheel width to your own desire.
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