What cannot be mig welded but can tig also what and stick welded?

MIG welding (Metal Inert Gas welding):

Cannot be welded:

- Magnesium

- Zinc

- Beryllium

- Cadmium

TIG welding (Tungsten Inert Gas welding):

Can be welded:

- All metals, including those listed above

Stick welding (Shielded Metal Arc Welding):

Can be welded:

- Most metals, including those listed above, but not as versatile as TIG welding

Additionally:

- MIG welding is generally faster than TIG welding but produces a rougher weld.

- TIG welding produces a cleaner weld but is slower and requires more skill.

- Stick welding is the most versatile but also requires more skill and produces a rougher weld than TIG welding.