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First glass is heated and then shaped by rotating it in burner flames. There are 4 main types of burners. They are crossfire, fishtail, ribbon and Hand torch burners. Crossfire and fishtail burners are used for slices and angled bends. Ribbon burners are used for curves and sweep bends and hand torch can be used for splices or tapering and tipping of electrodes.

Both Neon and argon gas are inert gasses. If with neon or argon gas a few drops of mercury are added in the tube it will not cause any damage as long as the tube is intact. If the tube is broken it create problem to both environment and health. Due to this reason, many neon shops do not repair neon sign.