What is the correct shade of filter lens to use when conducting Gas Metal Arc Welding (GMAW)?

When conducting Gas Metal Arc Welding (GMAW), the appropriate shade of filter lens to use is crucial for protecting your eyes from the intense brightness and harmful radiation produced during the welding process. A shade of 10 is typically recommended for GMAW because it provides adequate protection while still allowing the welder to have good visibility of the weld pool.

Choosing a filter lens that is too dark can hinder the welder's ability to see the work area clearly, making it difficult to control the welding process effectively. Conversely, a lens that is too light will not provide sufficient protection against the UV and IR radiation emitted during welding, potentially causing eye damage.

The use of a shade 10 filter is standardized for GMAW, as it balances protection with visibility, enabling the welder to maintain optimal control and precision while working. Thus, the recommendation to use a shade 10 filter lens ensures safety and efficiency in gas metal arc welding operations.