Yes, a laser can easily weld gold to steel. A laser can do pretty
much any metals with little or no problems at all. I did a project
last year wich was made of stainless, sterling and 14K and fine
silver mesh (30 gauge0. All went together very easily. The back of
the stainless was then textured and blued with the laser. This was a
project that could not have been done with a torch.
Phillip Scott G.G.
Technical Support & Sales