Time to start welding! I was probably most nervous about this part. I made a diy spot welder out of some crap I had laying around. I mounted a starter solenoid to a large car audio capacitor. I used some stero battery wire and ran it to a connector that could hold the electrodes. I used an arcade game button for my push button. All worked out pretty well except now I had to learn how to use it. I cut some practice nickel strips and had some old 18650’s to practice on. Good thing I did. I learned a lot. It took me some time to find the right electrodes that gave me the perfect weld. I ended up using a couple solid copper wires for my electrodes. Worked much better than the copper nails I started with. Also learned that I couldn’t leave the capacitor on the charger as sometimes my solinoid would stick. Would have started a fire if I wasn’t able to unplug it so quick. So the process was to charge the capacitor and take the charger off. Then tap the button to help make sure the solinoid wasent stuck. Then touch electrodes to a scrap piece of nickel strip to make sure. Then actually make the weld. This was such a pita and will be buying a spot welder for the next pack I do. This process took way too much work for each individual weld. However after I got it down it did work really good. What I liked about the capacitor is that it only holds a certain amount of energy. So there was no worries about hitting the button just right. The welds were super consistent. I am to impatient to stop the project and order a good spot welder so on I go. They took awhile to make but turned out really good.