spot welders

[73Eldo]

I was poking around the K weld site and most places I click for more information are not in English. Kinda makes me think buying from them could be a hassle since they don't seem to be set up to deal direct with other countries?

So do you think the $200 line/mains powered units are more or less just the $30 circuit boards in a box with some sort of power likely sketchy supply? So if I tend to have car batteries around just buying one of the boards may just give me a different unreliable way to damage myself and shop? Sketchy line voltage unit that could short out and send line voltage through me and the work or sketchy circuit board that could short out and short a car battery that is giving off hydrogen? Since when have sparks and hydrogen ever lead to anything bad?

[DaHose]

Hydrogen and sparks is totally fine. Hindenberg anyone?

If making your own welder floats your boat, look into building one from a microwave transformer. There are youtube videos showing how.

https://youtu.be/UseccvORpk8

I went with the Sunkko so I wouldn't have yet another tool to build, in order to get things done. Now that I built my first pack, I am willing to tinker a little. I learned during my first build that I really would be nice to have a pen instead of the fixed arms, so I bought the parts to replace the existing weld arms with heavy wires, and a pen style welder. From what I see in this Youtube video, that will make for exactly what I want. I might add some cooling fans to the case/board as well.

https://www.youtube.com/watch?v=J2noz_7PGsA

Jose

[MacMac]

I can definitely recommend the best welder and DIYer.
Feel free to check here:

https://www.tucsonazwelding.com/

[AZguy]

<spam>

Has absolutely nothing to do with the discussion

[Laaker]

Listen to me, buddy, it won't be so easy for you to find a good welder. It's really quite difficult, because I studied for this profession and I know the level of training of these guys. Yes, Various organizations offer welding certification. But I chose to take courses and have never regretted it. There was no extra information in the training, only on the case and plus practice. It's such a profession. where nothing will work if you don't practice. Only constant classes and work with welding can make you a real professional. But there are few of them.

[Jason R7554]

One thing I learned when I started welding battery packs is to calculate current draw, wire/strip size, and check cell health before doing anything. I use an app called RenewSpark Tools (just search it on the iOS App Store — green leaf + lightning icon) for those quick checks.
It’s helped me avoid a lot of rebuild headaches.