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How to tan leather
Contributed by: Sadler
  • 1. What is the primary purpose of tanning leather?
A) To make it shiny
B) To remove all hair
C) To change its color
D) To prevent decomposition
  • 2. Which of these is NOT a common tanning agent?
A) Vegetable tannins
B) Sugar
C) Chromium salts
D) Aluminum salts
  • 3. What is the first step in most tanning processes?
A) Curing
B) Dyeing
C) Finishing
D) Tanning
  • 4. What does 'curing' primarily involve?
A) Adding color
B) Softening the leather
C) Stretching the leather
D) Preserving the hide
  • 5. Which curing method uses salt?
A) Smoking
B) Air drying
C) Salt curing
D) Pickling
  • 6. What is 'deliming' in leather tanning?
A) Removing lime
B) Removing hair
C) Adding lime
D) Adding fat
  • 7. What is a common vegetable tanning material?
A) Cement
B) Petroleum
C) Oak bark
D) Plastic
  • 8. Which type of tanning is known for its speed and stability?
A) Vegetable tanning
B) Chrome tanning
C) Brain tanning
D) Oil tanning
  • 9. What color is leather typically after chrome tanning?
A) Red
B) Blue-grey
C) Brown
D) Black
  • 10. What is 'fatliquoring' used for?
A) Hardening the leather
B) Waterproofing the leather
C) Adding color to the leather
D) Softening the leather
  • 11. What is staking in leather making?
A) Applying a finish
B) Mechanical softening
C) Applying dyes
D) Removing the hair
  • 12. What does the term 'crust' refer to in leather production?
A) Partially dried leather
B) Finished leather
C) Leather scraps
D) Raw hide
  • 13. Which of these is a type of fish oil used in tanning?
A) Vegetable oil
B) Olive oil
C) Cod liver oil
D) Motor oil
  • 14. What is the purpose of 'sammying'?
A) Adding moisture
B) Removing wrinkles
C) Adding color
D) Reducing moisture
  • 15. What is a common method of applying dyes to leather?
A) Drum dyeing
B) Airbrushing
C) Pouring
D) Spray painting
  • 16. What does 'full grain' leather refer to?
A) Split hide
B) Bottom layer of hide
C) Top layer of hide
D) Reconstituted leather
  • 17. Which tanning method is known for producing very soft and supple leather?
A) Brain tanning
B) Chrome tanning
C) Mineral tanning
D) Vegetable tanning
  • 18. What is the main difference between top-grain and split leather?
A) Split leather is more expensive
B) Split leather is stronger
C) Top-grain includes the grain layer
D) They are the same thing
  • 19. What is 'case hardening' in leather?
A) Dry outer layer
B) Adding metal
C) Hardening the entire leather
D) Waterproofing
  • 20. What is commonly used to neutralize leather after vegetable tanning?
A) Sodium bicarbonate
B) Nitric acid
C) Hydrochloric acid
D) Sulfuric acid
  • 21. What is 'boarding' leather?
A) Sewing the leather
B) Creating a grain pattern
C) Preparing the leather for dyeing
D) Cutting the leather
  • 22. What type of leather is traditionally used for saddles and belts?
A) Oil-tanned
B) Vegetable-tanned
C) Brain-tanned
D) Chrome-tanned
  • 23. What does 'retanning' involve?
A) Second tanning process
B) Finishing process
C) Dyeing process
D) First tanning process
  • 24. What is the purpose of using a glazing jack?
A) Polishing the leather
B) Stretching the leather
C) Cutting the leather
D) Sewing the leather
  • 25. Which tanning method relies on aldehyde compounds?
A) Vegetable tanning
B) Aldehyde tanning
C) Oil tanning
D) Chrome tanning
  • 26. What is the purpose of 'crusting' the leather?
A) Making the leather waterproof
B) Drying the leather
C) Removing hair from the leather
D) Adding color to the leather
  • 27. What tool is used to split leather into different thicknesses?
A) Embossing machine
B) Cutting machine
C) Splitting machine
D) Sewing machine
  • 28. What is the purpose of using wax on finished leather?
A) Adding color
B) Removing stains
C) Softening the leather
D) Enhancing shine and protection
  • 29. Which type of tanning is the most environmentally friendly?
A) Chrome tanning
B) Synthetic tanning
C) Vegetable tanning
D) Aldehyde tanning
  • 30. What is 'buffing' leather used for?
A) Smoothing the surface
B) Removing moisture
C) Adding color
D) Stretching the leather
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