These Fire Crowns are pieces of art, made by hand really unique custom accessory.
They are made of copper tubes and wires. The size is adjustable, you can band the copper tubes and wires, so you have the possibility to fix it well to your head. The weight of a three-section crown is about 450 grams, and burns for about 5 minutes or so.
Only use lamp oil or barbecue lighter fluid, do not use white. Make sure you shake off excess fuel, and always where a hat or black cotton beanie for hair cover, to be safe. Black welding hats are very good/cheap and can be purchased at any welding supply store.
Use lamp oil or white gas. Lamp oil burns at a much lower temperature.
Always shake out excess fuel before you light up.
Have adequate safety personnel and procedures in place before lighting.