I have a couple of the Harbor Freight welding spoons - for past projects I've been able to bullshit it by using green masking tape to hold a copper backing over holes to weld them up, and been wishing I had a better way of doing it the whole time
Great idea, I have some old mirror holes to weld up in my truck, at what size would you say a sheet metal hole is to big to weld up without making a plug? Thanks for the video 👍😁