How Do They Make Glass Sheets

Making sheets of glass window glass stained glass has been a preoccupation of glassblowers down through the centuries.
How do they make glass sheets. Larger sheets of glass were made by blowing large cylinders which were cut open and flattened then cut into panes. Butter or line a baking sheet with baker s silicon paper. Machine drawn cylinder sheet method early 20th century. As seen on discovery channel s some assembly required.
Other processes for making flat glass include. Most window glass in the early 19th century was made using the cylinder method. If you have a candy thermometer remove from heat at the hard crack stage clear glass. 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.
Most flat glass is soda lime glass produced by the float glass process 1950s. Sheet glass is made mechanically these days by floating molten glasson molten tin under a nitrogen atmosphere to avoid oxidation until it is annealed. 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. How glass in made.
Place the sheet in the refrigerator to chill. The soft sheets are fitted into a blanking machine and under several tons of pressure the die cuts through the plastic to produce a blank. Stir continuously until the sugar melts takes a while. Enjoy the videos and music you love upload original content and share it all with friends family and the world on youtube.