i noted that the guidance for how much current the nickel can carry. is propotional to the area the cross section. (thick x width). you could estimate the cross section of your welds to estimate how many you need.
turns out it doesn’t take that many welds to have the same area as the cross section of the nickel.
i was thinking about it cause it seemed like the welds were so small relative to the nickel. but… in cross sectional area, they are not.