How to make 1'' inch firework shell |BEAUTIFULL EFFECT

ATTENTION: DON'T TRY THIS AT HOME OR ANYWHERE ELSE, AND DO NOT REPEAT ACTIONS FUTURED IN THIS VIDEO!
THIS IS ONLY FOR EDUCATIONAL PURPOSES AND ENTERTAINMENT!

In this video you will see my way of making firework shell with some basic igredients and tools, and very important it's very cheap to make, i enjoyed making this shell i hope that you will also enjoy when you are watching, but keep in mind you must be responsible and wellknowing if ever make these, so be carefull! And if you ever try to make one of these, DO IT AT YOUR OWN RISK! but KIDS DO NOT TRY TO ATTEMPT TO MAKE ANY OF THESE!
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These pyrotechnic products are made in country where it is legal to make or modify pyrotechnic products. This video has only educational and scientific purposes, I do not encourage anyone to try making these. And this channel will never promote real bomb-making tutorial.
Again these are just pyrotechnics for display.