Melting glass bottles, such as beer bottles and wine bottles, is sometimes referred to as bottle slumping or slumping bottles. The process uses an extremely high temperature to slowly melt the glass bottles into different shapes. The end result is a bottle that sits on its side, with a flat bottom that keeps the bottle from rolling around. Melted beer bottles serve as the perfect ashtray for your next party but also function as a quick candy dish or spoon rest for the kitchen.
- Skill level:
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Things you need
- 340gr. glass beer bottle
- Dish soap
- Warm water
- Razor blade (optional)
- Paper towels
- Kiln shelf
- Heavy duty rubber gloves
- Kiln paper
Empty the beer bottle of any remaining alcohol and rinse it under running water. Wash the outside of the bottle carefully with dish soap and warm water. If the bottles have any type of label on the outside, then scrape the label and any glue residue off with a razor blade. Turn the bottle upside down on paper towels and it let drain.
Place the kiln shelf on a flat surface and cover with a piece of speciality kiln paper. The kiln paper keeps the beer bottle from melting to the shelf itself and sticking to the surface. The flatness of the shelf also ensures that the bottle melts with a flat bottom. Set the bottle on its side, on top of the shelf.
Wear heavy duty gloves and goggles when working with the kiln and the melted glass to prevent burning yourself. Place the bottle and shelf inside the kiln. Turn the kiln on, and let it slowly reach 593 degrees Celsius. Give the kiln at least two hours to reach this temperature, with the kiln rising by 500 degrees during each hour.
Adjust the temperature to 1,300 degrees, and once it reaches this level, adjust it again to 1,475 degrees. When the bottom of the bottle melts into a semi-flat shape, open the kiln lid to bring the temperature down rapidly. Turn off the heat in the kiln, and let the bottle cool down.
Remove the bottle and the shelf from the kiln, once the beer bottle cools. The natural curves and melted shape of the bottle provide resting spots for holding lit cigarettes, and the flat bottom keeps the bottle from tipping over.
Tips and warnings
- If you immediately adjust the temperature to a high level, it increases the chances of the bottle breaking or shattering.
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