Air Cannon Serves Up a Blast of Ferrocerium Sparks
OK, looks like we have a new way to entertain the kids and wreak havoc in the neighborhood, if this spark-shooting ferrocerium cannon is as easy to build as it looks.
This one comes to us by well-known purveyor of eyebrow-singing projects [NightHawkInLight], whose propane torch never seems to get …read more
Continue reading Air Cannon Serves Up a Blast of Ferrocerium Sparks