How Do They Make Glass Sheets

Until the 16th century window glass or other flat glass was generally cut from large discs or rondels of crown glass.

How do they make glass sheets.

Most flat glass is soda lime glass produced by the float glass process 1950s. Larger sheets of glass were made by blowing large cylinders which were cut open and flattened then cut into panes. Place the sheet in the refrigerator to chill. Sheet glass is made mechanically these days by floating molten glasson molten tin under a nitrogen atmosphere to avoid oxidation until it is annealed.

How glass in made. Machine drawn cylinder sheet method early 20th century. The cylinders were 6 to 8 feet 180 to 240 cm long and 10 to 14 inches 25 to 36 cm in diameter limiting the width that panes of glass could be cut and resulting in windows. Most window glass in the early 19th century was made using the cylinder method.

Stir continuously until the sugar melts takes a while. Pour the sugar into a small pan on a stove over low heat. If you have a candy thermometer remove from heat at the hard crack stage clear glass. As seen on discovery channel s some assembly required.

Enjoy the videos and music you love upload original content and share it all with friends family and the world on youtube. Broad sheet method 13th century window crown glass technique 14th century blown plate method 17th century plate polishing 17th century cylinder blown sheet method. Making sheets of glass window glass stained glass has been a preoccupation of glassblowers down through the centuries. The acetate sheets are brought from a cool storage area to the blanking room where they are heated in small ovens to about 180 f 68 c to soften the plastic.