500 inches (about 40 feet) Magnesium metal strip, weighing 25 – 29 grams, formed in a roll. This magnesium ribbon is about 3 mm wide and 0.03mm thick. For combustion experiments. How to ignite Magnesium Ribbon: Cut about 3 inches of the magnesium ribbon and hold one end of it securely with a pair of pliers. Use the blue flame of a gas stove or gas torch to ignite the other end. When the burning end is at the bottom, heat moves up and everything burns quickly. Hold it horizontally for slower burning. Flammable solid. 30 Grams of Magnesium (Mg) Metal Strip Roll, about 500 inches long. Thickness 0.03mm. Flammable Solid. Magnesium is a flammable metal used in fire works and combustion experiments. The MiniScience brand of Magnesium Ribbon is classified as deluxe because it is cleaner and has smooth surface and edges and usually no splinters to be worried about. It also ignites faster.