i’m having trouble getting it to do good welds.
I have it set to 85A current, 2 pulse setting. When I go to 90 it basically just blows a hole in the nickel. The “pulse group” knob… i honestly don’t know what it does. I fucked with it a little but it doesn’t seem to change anything.
When I do the welds, they seem fine at first, but after i go back and give them a tug to test them, sometimes they come apart if i yank hard enough. If i put a lot of pressure on the top of it before I weld to stick the electrodes in, I can get it to stick decently and can’t really pull it back out, but if I go back and put one more layer of nickel on it, I can definitely pull the top layer off.
Anyone have any suggestions to make the welds stick a little better?
ok, but my last question then is ampacity. according to the nickel chart, 0.15mm is good for ~7A. so doesn’t that mean that you would need to do 4 layers for the samsung 40T (which is a ~30A battery)? Or am I not doing that math right?
Yes, as @Athrx linked, there was an experiment done (you can see it somewhere in that thread) that led to those numbers being revised. I’d use those numbers in the top of the Conductor Current Ratings thread.
Those ratings are continuous, it’s designed that way. For instantaneous or peak, you can pretty much double all the numbers for a few seconds at a time. Like starting from a stop for example or climbing a steep hill.
Make sure you’re not trying to weld a second layer of new nickel directly onto an existing spot where you’ve already welded - my experience has been that each weld needs a fresh spot. Also, I always give the strips of nickel a gentle sanding w 600 grit and then wipe them with isoprop.
