How to blow glass
  • 1. What is the primary material used in glassblowing?
A) Clay
B) Plastic
C) Molten Glass
D) Metal
  • 2. What is the name of the long, hollow pipe used to gather molten glass?
A) Shears
B) Punt
C) Marver
D) Blowpipe
  • 3. What is the approximate temperature at which glass is workable for blowing?
A) 1000°F (538°C)
B) 500°F (260°C)
C) 3000°F (1649°C)
D) 2000°F (1093°C)
  • 4. What is the process of rolling the molten glass on a flat surface called?
A) Annealing
B) Shaping
C) Gathering
D) Marvering
  • 5. What is the purpose of annealing?
A) Increase the melting point
B) Add color
C) Relieve internal stresses
D) Make the glass more brittle
  • 6. What type of furnace is used to melt glass?
A) Kiln
B) Oven
C) Glory Hole
D) Microwave
  • 7. What is a punt?
A) A coloring agent
B) A solid metal rod used to hold the glass
C) A type of glass
D) A tool for cutting glass
  • 8. What tool is commonly used for shaping and opening the glass?
A) Tweezers
B) Screwdrivers
C) Jacks
D) Hammers
  • 9. What is a 'gather' in glassblowing?
A) A type of furnace
B) A blob of molten glass collected on the blowpipe
C) A finishing technique
D) A broken piece of glass
  • 10. Which safety precaution is most important in glassblowing?
A) Gloves
B) Open-toed shoes
C) Eye protection
D) Ear protection
  • 11. What is the purpose of a reheating chamber (glory hole)?
A) To add color to the glass.
B) To keep the glass workable.
C) To polish the glass.
D) To cool the glass quickly.
  • 12. What does 'cold working' refer to?
A) Working in a cold environment
B) Modifying glass after it has cooled
C) Working with cold glass
D) Rapidly cooling glass
  • 13. Which of these is a common glassblowing technique?
A) Laser cutting
B) Water casting
C) Cold welding
D) Off-hand blowing
  • 14. What is the chemical composition of soda-lime glass?
A) Clay, water, and fire
B) Metal, carbon, and iron
C) Silica, soda ash, and lime
D) Plastic, sand, and salt
  • 15. What is the purpose of compressed air in glassblowing?
A) To inflate the glass bubble.
B) To heat the glass.
C) To clean the workshop.
D) To cool the tools.
  • 16. What is 'striking' in the context of glass coloring?
A) Developing the color through heat treatment
B) Removing color from the glass
C) Adding color to the glass
D) Mixing different colors of glass
  • 17. What is the term for adding small pieces of colored glass (frit) to molten glass?
A) Layering
B) Inclusion
C) Fritography
D) Murrine
  • 18. What does 'devitrification' refer to?
A) The process of glass becoming crystalline.
B) The process of glass becoming stronger.
C) The process of glass becoming clear.
D) The process of glass melting.
  • 19. What is 'slumping'?
A) A method of cleaning glass.
B) Breaking glass intentionally.
C) A type of glass color.
D) Shaping glass using gravity and heat.
  • 20. What is the main difference between soft glass and borosilicate glass?
A) Borosilicate has a lower coefficient of expansion.
B) Soft glass melts at a lower temperature.
C) Soft glass is more durable
D) They're the same thing.
  • 21. What is a 'cane' in glassblowing?
A) Rods of colored glass used to create patterns
B) A safety device
C) A type of glass cleaner
D) A mold for shaping glass
  • 22. Which of these is NOT a common glassblowing tool?
A) Tweezers
B) Block
C) Diamond Shears
D) Soldering Iron
  • 23. What is 'color flashing'?
A) Cleaning glass to make it shiny
B) Applying a thin layer of colored glass over clear glass
C) Heating glass to make it flash
D) Rapidly changing the color of glass
  • 24. What is the function of a 'Yoke'?
A) Supports the blowpipe
B) Cleans the glass
C) Cuts the glass
D) Heats the glass
  • 25. Why is it important to keep the blowpipe rotating?
A) To make the glass shinier
B) To make the glass stronger
C) To prevent the glass from cracking
D) To maintain even distribution of glass
  • 26. What is 'iridizing'?
A) Removing color from glass
B) Creating a metallic, rainbow-like effect on the surface of glass
C) Strengthening the glass
D) Making glass transparent
  • 27. What type of gloves are generally recommended for glassblowing?
A) Heat-resistant gloves
B) Leather gloves
C) No gloves are needed
D) Latex gloves
  • 28. What is a 'bit' in glassblowing?
A) A type of colorant
B) A broken piece of glass
C) A small piece of glass added to the main form
D) A type of tool
  • 29. What is the benefit of using borosilicate glass over soda-lime for certain applications?
A) Easier to melt
B) Higher thermal shock resistance
C) Brighter colors
D) Cheaper
  • 30. What is a 'muster' in glassblowing terminology?
A) A tool to measure the heat of the glass
B) A type of mold
C) The process of cleaning a furnace
D) A detailed plan or design for a glass piece.
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