You think probable to sand.
no, sand is heated to make glass :) youtwat.^.^
sand is grinded and then heated and left to moult into glass
Glass
It is the principal component of glass making
glass
Glass is made by combining sand, soda ash, and limestone, which are heated together to form a molten mixture that solidifies into glass. Concrete is made by combining cement, water, sand, and gravel, which form a paste that hardens into a solid material.
In stained glass, they use things in normal glass but add colors and make it thinner.
Limestone Sand
You can grind glass or plastic. For fun you can make a good lens out of ice.
I only know one material that make good resistor that is STEEL(if not heated)
Glass is primarily made of silica sand, soda ash, and limestone, combined and heated to form a liquid which is then cooled to create the solid glass material. Concrete is typically a mixture of cement, water, sand, and aggregate such as gravel or crushed stone. The combination of these materials in specific proportions results in the final properties of glass and concrete.
Fibre glass is a good material to make boats it is a mixture of glass and plastic.