Dash gauge "welding"

Redfish-

Not so sure. I was told by the place I use in East Hartford CT for metal plating that they do some of the metal playing for I.S. They told me I.S. Uses a place close to Boston, Mass (just up the road from them in Rhode Island where I.S. Is located) not sure who but it is an industrial plastic plater.
I’ll keep digging. The wait time is mostly getting a large enough batch together to make it reasonable.
Joe