Weld feedback please

Just practicing my welds before settling down to the battery welds…

How much heat marking is acceptable on the back of the weld? I’m welding pure nickel to a scalpel blade (0.38mm thick).

Both the pattern of 4 and 2 are strong welds but I used a longer dwell on the 4 (15mS as opposed to 12mS)image image image image

You must avoid black marks.

0211 If you see this picture for example: Welds are good from 7 to 9 ms Are too deep from 9 to 10 ms And overkill 11+ Welds must be firm enough to need pliers to remove the nickel but not deep enough to burn the back side.

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