Which shade number is used for light cutting up to 1 inch, among the listed values?

• A. 2
• B. 3 or 4
• C. 5
• D. 6

Answer: (B)

Choosing the right shade for eye protection when flame cutting is about balancing safety with visibility. For light cutting up to about an inch, you want a lighter shade because it protects you from the flame’s brightness while still letting you see the cut line clearly. This visibility is crucial for guiding the cut accurately and avoiding mistakes. A shade that’s too dark would make it hard to see what you’re doing, increasing the risk of errors, while a shade that’s too light may not provide enough protection against radiant heat and glare. Among the options, the one that sits at the lighter end of the shade range best supports clean, controlled cutting for light thickness. For heavier cutting or brighter flames, a darker shade would be required instead.