Helpful.
1. Learning welding can cultivate hand-eye coordination and concentration, and the skills are helpful for calligraphy.
2. Welding and calligraphy are completely different skills and art forms. Electric welding focuses on metal connections, while calligraphy emphasizes the use of strokes and artistic expression. You can use your spare time to practice calligraphy. Welding itself cannot directly improve calligraphy. To truly improve your calligraphy skills, you need specialized calligraphy training and practice.