Honestly, I haven’t figured this spot welder out — 9.9 gears, and 0.1 nickel strip only needs gear 1.5 to 1.8! I haven’t figured it out and you’re still buying it after me, unbelievable

Lefeng admits he hasn’t figured the U3 out: the Jiashikai negative is steel, so he tests on a stainless-steel knife — 0.1 nickel strip only needs gear 1.5–1.8 (anything around 1.x is fine), 0.15 nickel strip at gear 2.5 blackens and throws sparks, not good, still not dialed in; cells are on the way and he’ll keep experimenting; comments: ordered from the storefront and it won’t power on, microwave-transformer welder also failed, once you get into it you’ll want a capacitor unit

The comments say I can’t even figure out the AWithZ spot welder; honestly, I haven’t, I’ve tried lots of settings. Because the Jiashikai negative is steel, I test on a stainless-steel knife: for 0.1 nickel strip on this cell the gear only needs to be 1-point-something, 1.5 is enough, and there won’t be a problem; how many gears 0.15 nickel strip needs I don’t know, bumped to 2.5 to try: too high a gear blackens it, it’s already throwing sparks, the result isn’t great, probably still not dialed in; the cells are bought and on the way, I’ll keep experimenting with this AWithZ spot welder. Title: 9.9 gears, 0.1 only needs gear 1.5–1.8; “I haven’t figured it out and you’re still buying it after me, unbelievable”. 207 comments: ordered from your storefront, arrived today and won’t power on (check whether it has charge; if it doesn’t work, return it right away); my microwave-transformer welder failed too (you’re going down the road I went down; the money for a hand-build buys one of these); a Zhongwei Zhixing 30s can’t weld 0.1 nickel-plated stacked on 0.1 copper to a Jiashikai negative (0.1 copper needs a ¥400–500 class machine); fine for beginners to play with but later you’ll definitely want a capacitor unit (yep); get a UF20B; how about the Xiaoqiang.

Outcome

Steps4 steps · click a frame to jump

1. 
   1. Reply to the comments; a stainless-steel knife stands in for the steel negative

   The comments say I haven’t figured it out, true; tried lots of settings; the Jiashikai negative is steel, so test on a stainless-steel knife.

   00:01 – 00:15
2. 
   2. 0.1 nickel strip: gear 1.5 is enough, no problem

   For 0.1 nickel strip on this cell the gear only needs 1-point-something, 1.5 is enough and there won’t be a problem; this one is 0.1; how much 0.15 needs, no idea.

   00:15 – 00:52
3. 
   3. 0.15 nickel strip at gear 2.5: blackens and sparks, not dialed in

   Bumped to 2.5 to try; too high a gear blackens it; already throwing sparks; this is gear 2.5, 0.15 nickel strip, the result isn’t great, probably not dialed in yet, haven’t figured it out.

   00:53 – 01:27
4. 
   4. Cells on the way, keep experimenting

   The cells are bought and on the way; will keep experimenting with this AWithZ spot welder; thanks for watching.

   01:27 – 01:38

Bill of materials

Creator’s tips

• 0.1 nickel strip on a steel can needs only gear 1.5–1.8; too high a gear blackens it and throws sparks 00:15
• Creator: when a new unit arrives, check it has charge first; if it doesn’t work, return it right away

Pitfalls

• 0.15 nickel strip at gear 2.5 gave a poor result, settings not dialed in 01:13
• Comment: ordered from the storefront, arrived and won’t power on

Li-ion safety

• Too high a gear throws sparks 00:53

Quotes