Looking to research what equipment would be needed to make these signs. The corrugated one has got me stumped??
or print it flat and stamp the corrugation after
Go buy some at Hobby Lobby and re-sell them.
It would take very sophisticated tooling and presses to stamp a pre-coated sheet...not to mention paints / coatings that don't flake or abrade. It's typically done with appliances such as washers/dryers/ranges, etc...but that is a totally different coating altogether.