glass manufacturing (task3)

to make a glass, at least we need there materials.there are sand, soda and limestone.the rasio for these three is depended to the quality that needed.firstly the materials puted in a furnace and then begin to heating.prepare the mould for the glass shape to make a bottle and roller to make a plate. after the materials looked that being a liquid, bring it to the mould and roller appropriate to the measurement.inspect it untill there are not any mistake in the measure or other error.finally the material will be cold and the glass is accomplished.