Helmets - motorcycle helmets, right? - have shells of either fiberglass or Kevlar. The shell uses cloth, resin, hardener and paint. The padding contains polyurethane, which is a "polyol," a diisocyanate and a catalyst plus a blowing agent to turn it into foam. Then there is cloth, polycarbonate for the visor, a little bit of metal...
Styrofoam would be a nice choice.
no
Materials used for making colors are mostly colored shells and plants.
The three stars on the Pittsburgh Steelers helmet represent the materials that were traditionally used in the steel-making process: coal, iron ore, and scrap steel. These materials are significant to the team's history as Pittsburgh was once a major hub for steel production. The logo was created in 1962 by U.S. Steel's Roy Kohler.
some new materials that are used in making jewellery today is beads, wire, and pliers
A drill is a commonly used tool for making holes in various materials.
. A variety of materials are used for making shoes. Leather fabrics, plastic, rubber, fabrics, wood, jute fabrics, and metal are all materials used in shoe making.
Depends on the materials used to make the helmet, but typically, you should replace a helmet every there years or so as the UV rays penetrate it and brake it down from the day you take it out of the box. Also, if you drop the helmet, even from knee height, you should replace it even then, as well as after a crash.
utilized
mild steel
steel
Leather and canvas