Pyrofuses and Bullet Hits
These are small devices fired from a low-voltage electric source. They are similar in size and shape and it is important to know which is which and to ensure that they are used only for their stipulated purposes.
Pyrofuses
Pyrofuses are used to ignite pyrotechnic mixtures and flammable substances.
The ignition effect derives from a small bead of chemical material which flares like a match-head when an electric current is passed through an embedded fuse-wire. This is sufficient to ignite such loose materials as mealed gunpowder or flash powder, but is too short-lived to ignite paper or cloth. For these it is necessary to prime the area around the head of the pyrofuse with gunpowder or to treat the material with an ...
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