SAFETY(The most important thing )
Click here for the essential "Commandments of Safety"
Fireworks have a certain aura about them. We look in awe at how so much color, fire and power can be harnessed and then released so violently yet artistically. Building an object capable of such energy does not bring thoughts of safety to the forefront of the average mind. Indeed there are some dangers involved. All of the dangers are however quite manageable with simple safety steps, and many can be prevented entirely. An individual who does not take shortcuts with safety will find building fireworks to be one of the most rewarding experiences to be found. It is not difficult to stay safe.
On the other hand, If an individual disregards basic safety, they will quickly find themselves at risk of dangers that they would not otherwise even need to consider. The steps to stay safe are very simple, and the extra time is not worth an injury.
The most important safety step is to start small. If you only work with as much composition as you need to complete the device you are currently making, and keep other compositions away from the area, not only would a mistake be less severe but it greatly reduces the chance of one happening. That also speaks to keeping your work area clean.
What may seem obvious but is easily forgotten or ignored, is to always work outside. When indoors, there are very limited routes of escape, the building itself could catch fire, there is low ventilation, and any chemical fire will be much more violent due to being confined. All of these dangers are solved by working outdoors. A single folding table placed away from any buildings is a great work area.
ALSO , remember to wear PPE when working with chemicals, some chemicals can cause severe harm if have contact with skin. gloves, adequate ventilation, dust mask,and safety glasses are the minimum
(THIS SAFETY INFORMATION CAME FROM GRASSROOTSDIY.COM A GREAT PLACE FOR COOL PROJECTS)