Folks

I am looking to buy a welder (can be more than one) that is able to do the following...

- weld steel (from 16 gage sheet to up to 3/8 thick)
- weld stainless (from 16 gage sheet up to 3/8 thick)
- weld aluminum (0.1" up to 3/8 thick)
-weld pure (90%+) copper (0.1" up to 3/8 thick)

I dont need a volume welder, just able to weld with min skills required. Oh and argon/hilium may not be available where I am at (flux core is available)

Any suggestions!?