Crafts

That will do what you need. I am not sure why you want the surface to be wiped off, though. You need to look for something that will dry on non-porous surfaces, and then chose either a matte or gloss finish. I have never worked with metal, but my choice for joining paper to plastic (another non-porous surface) is Ranger's Glossy Accents. It works both as the glue and the finish, and results in a very glossy surface. It is also almost self-leveling, so I rarely have to mess with it much after it has been applied. Although the result is a smooth, glossy surface, it is a dimensional medium, so the surface will be 'thick' (as compared to a sheet of paper)

I hope this is of some help to you.