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Round Crosette cavities


808goboom

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I need help understanding how round cavities in crossettes stars work? I heard u have to insert something called a "shot" or something like a firecracker to break the comet into fragments.can u however jus insert flash powder like a regular crosette star to break it?
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For a standard round shot crossette pump to be used shotless, it will probably need a fuse "tit" on the end of it. Something to allow fire into the cavity while still retaining some confinement and integrity.

 

There's nothing special about a round crossette cavity requiring a shot. I think the fluted cruciform crossettes work better with a shot as well. Trying to intentionally make shotless crossettes typically requires a different pump design. Most people however take what's available commercially and try to make them work. Shots have the allusion of being tedious and time consuming to make, but they're really not that bad once you get the hang of it.

 

A shot is a thin paper tube that is filled with your break composition, fused, and constrained/spiked in some way. The details are given in Pyrotechnica XI.

 

When making crossettes it's easy to try to cut corners and end up with kind of a poor effect.

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Since were back on the subject, what do you call cutting corners?
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