Never serve low-end customers — deep down they don’t recognise your value

Lefeng’s UF20B (No. 6 pen) gear test at 10/15/20/25 (preheat untouched): on 0.15 nickel-plated steel strip, gear 10 peels off leaving two holes, 15 takes effort, 20 tears the strip, 25 is completely OK and hurts the hand to peel — tearing achieved, no point going higher; answering a fan’s ‘0.15 copper + 0.2 nickel-plated won’t weld’ — first ask whether there is a nickel base layer, doesn’t recommend copper straight on with this unit (copper is hard), stacked-copper and non-upgraded-pen comparisons to follow; the test only speaks for the unit in his shop window

Opens: no addiction to fishing, but addicted to spot welding — a few days without welding and the hands itch. Today testing gears 10/15/20/25; the machine is an AWithZ UF20B with the upgraded No. 6 welding pen; last time was gears 1–5, this time from 10 up in steps of 5, preheat and the rest untouched, only the gear changes, two welds per gear. Gear 10: the 0.15 nickel-plated steel strip peels off, leaving two holes, two holes in the nickel strip too; gear 15: takes some effort, felt it in the hand muscles; gear 20: can already tear the nickel-plated steel strip; gear 25: completely OK, hand hurts from peeling, switch hands; the strip-tearing result is achieved, no need to go higher. A fan says 0.15 copper on 0.2 nickel-plated steel strip won’t weld — I asked whether there was a nickel base layer; with this unit I don’t recommend copper straight on, because copper is fairly hard; a stacked-copper test will be added to the series; the test only speaks for the AWithZ UF20B in my shop window, ones bought elsewhere perform differently, don’t flame me; this is the upgraded No. 6 pen, without the upgrade the result differs too, a non-upgraded-pen test to follow. 37 comments: quit food delivery and go work at a battery factory; why not get a better welder, it’s painful to watch (I also have an AWithZ P60F, it’s enough); can it weld EVE C40 (with a nickel adapter it can); will it work on Gotion copper-terminal 20A (probably not); is the low/high gear difference current or time; what current at the tip on gear 10; 6045 without stacked copper, straight 0.15 nickel-plated OK?; the No. 6 cable’s current doesn’t match a two-capacitor home-built unit.

Outcome

Steps6 steps · click a frame to jump

1. 
   1. Test setup: UF20B + No. 6 pen, gears 10/15/20/25, preheat untouched, two welds each

   Addicted to spot welding; today testing gears 10, 15, 20, 25; AWithZ UF20B, upgraded No. 6 welding pen; last time gears 1–5, this time from 10 in steps of 5; preheat and the rest untouched, only the gear changes; two welds.

   00:00 – 00:51
2. 
   2. Gear 10: peels off leaving two holes

   At gear 10 the 0.15 nickel-plated steel strip peels off, still two holes, two holes in the nickel strip too.

   00:57 – 01:09
3. 
   3. Gear 15: hard to peel, felt in the hand muscles

   Gear 15 result: takes some effort, pulling it felt like it strained the hand muscles; up to gear 20.

   01:12 – 01:32
4. 
   4. Gear 20: can already tear the nickel-plated steel strip

   At gear 20 the 0.15 nickel-plated steel strip can already be torn.

   01:35 – 02:01
5. 
   5. Gear 25: completely OK, hand hurts; tearing achieved, no need to go higher

   Gear 25, still 0.15 nickel-plated; completely OK; hand hurts from peeling, switch hands; the strip-tearing result is achieved, no need to go higher.

   01:48 – 02:29
6. 
   6. Answering a fan: for copper, ask about the nickel base first; no copper straight on; only speaks for the shop-window unit and the No. 6 pen

   A fan’s 0.15 copper + 0.2 nickel-plated won’t weld, asked whether there was a nickel base; doesn’t recommend copper straight on (copper is hard); stacked-copper test to be added to the series; only speaks for the UF20B in the shop window; without the upgraded No. 6 pen the result differs, that will be posted too.

   02:22 – 03:24

Bill of materials

Creator’s tips

• UF20B (No. 6 pen) on 0.15 nickel-plated: tears the strip from gear 20, fully solid at 25 01:35
• For stacked copper, lay a nickel base first; don’t weld copper straight on 02:29
• Different sales channels / different pens perform differently; the settings only speak for this unit 02:43

Pitfalls

• A fan’s 0.15 copper + 0.2 nickel-plated with no base layer won’t weld 02:16
• The peel test hurts the hand 02:01

Li-ion safety

Quotes