Machine Work and Handwork.
Metals must be worked largely by machine processes, but they must be worked also in many instances by hand processes. All-round machinists and other metal workers must know how to operate machines, but they must also be skilled artisans capable of using a variety of hand tools. Bench hands, assemblers, and specialists in many lines are hand workers and only incidentally if at all machine operators.
If you like machinery and tools, and working with durable materials—working with steel and other less difficult metals as the carpenter works with wood, you can almost certainly find some line of metal working in which you can succeed, whatever your disability.
In the metal-working trades there is every variety of handwork and footwork and headwork to be done, light work and heavy work, work in shop or factory and work in the open, bench work and machine work, highly skilled as well as simple routine work.