NuMetal?

naji408 said

Maybe someone else can chime in and let me know.

if there is a dime size rust hole, and all the rust is cleaned out, can I use a mig welder to just slowly close it up, or do I need to put a piece of sheet metal?

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Tried that, that hole may and probably will turn into a quarter size . Better to cut it out larger and add solid piece of metal. You dont know what it looks like on the back side. Been there done that, adding a new piece of metal more work but piece of mind.JMO jesse