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A post by Repair Xiao Li (apprentice edition)

Apprentice LiFollow
Welder reviews›Review›UK1· BeginnerReport
Adaptive · 1080 / 720 / 480Auto subtitlesPlayback info 03:09
Welding Recipe
ModelUK1 (AWithZ sample, ‘high-power’)00:14
Gear20 (picked at random); range 0–10001:19
ModeFoot pedal / manual / auto; modes a/b00:26
MaterialNickel strip 0.15 (included strip)01:33
Strip thickness0.15 mm02:02
Accessories: foot pedal, charging cable, welding pen, nickel strip, two pairs of pins00:26
Creator’s wish: 2 m pen cable; comments: a long cable adds resistance and cuts current02:28

Creator’s own settings as stated in the video (timestamps link to the moment). Not official values — test on scrap first.

Released 2026-01-01ReviewLevel Beginnerdigest confidence 0.75 · pending review

Bill of materials

Welder, accessories, consumables and parts used in this build; quantities and specs are editable Download BOM
AWithZ official
UK1 spot welder
×
¥199–219
WP120 Smart Pen (8 AWG)
×
¥39.9
Nickel-plated steel strip
×
from ¥5.9
Third-party partsFrom the creator’s parts list, grouped by category; links to third-party stores
Foot pedalOther parts · Foot control
×
Third-party

Description

Repair Xiao Li: the H2 shared earlier was called underpowered, so AWithZ sent another high-power sample (UK1): foot pedal, manual / auto, small screen, 100 gears; comes with charging cable, main unit, welding pen, nickel strip and two pairs of pins; first power-on, pick mode a/b, dials in gear 20 at random and welds 0.15 nickel strip, ‘very solid, beautiful’, gear 100 should handle heavy work; gripes that every welder’s cable is too short and wants 2 m; comments: a long cable adds resistance and cuts current, recommending it without knowing how to set it, the P120 is great but pricey

Many people said the welder shared earlier (H2) is a bit underpowered and can’t do big batches, so today another one, also AWithZ — they sent another sample, a high-power one. Press start and there’s a small screen; it comes with a foot pedal (control the welding pace with your foot), manual control is also possible, and of course auto; charging cable, main unit, welding pen, plus ‘welding rods’ (nickel strip) and two pins. Power on, pick a mode, should be a or b (never played with it), the gear keeps going up, 100 gears in all, no idea what’s right so gear 20; first time switched on, ‘misspoke, 0.15mm’, try a weld on 0.15 nickel strip; no 18650 at home so weld straight onto the strip; feels like the power is a bit high, the 0.15 strip is already very solid, very beautiful, this is only gear 20, at gear 100 the heavy stuff should be fine too, very nice. But no idea why every spot welder’s cable is this short — 2 m long would be better for batch welding without following the machine around, maybe cost or maybe not suited to carrying high current; 0–100 gears adjustable, high-power welding no problem. Comments: bought an AWithZ P120, works great, just pricey (2); doesn’t know how to set it yet recommends others buy it, a long cable adds resistance and hurts the instantaneous current (1); this little tool is fine under 0.2mm, above that it won’t hold, a microwave transformer does 0.4; cable is expensive / a long cable adds internal resistance (several); self-taught, hasn’t figured it out and already selling.

Outcome

GoalUnbox the high-power sample AWithZ sent (UK1), test-weld 0.15 nickel strip
BuildUK1 + 0.15 nickel strip
ResultGear 20 welds 0.15 very solidly · verified on camera: 122–148s pull after welding, ‘very solid’

Steps5 steps · click a frame to jump

  1. 1. Background: H2 called underpowered; AWithZ sends a high-power sample

    The welder shared earlier is a bit underpowered, can’t do big batches; introducing another AWithZ, they sent another sample, high-power; press start and there’s a small screen.

    00:00 – 00:26
  2. 2. Accessories: foot pedal, manual / auto, charging cable, main unit, welding pen, nickel strip, two pairs of pins

    Foot pedal for foot control of welding; manual control too; auto too; charging cable, main unit, welding pen; plus ‘welding rods’ (nickel strip) and two pins (one per pen).

    00:26 – 01:05
  3. 3. Power on, pick mode a/b; 100 gears, gear 20 at random; 0.15 nickel strip

    Power on; mode should be a or b, never played with it; the gear keeps going up, 100 in all; no idea what’s right, gear 20; first time switched on; ‘misspoke, 0.15mm’, try 0.15 nickel strip.

    01:05 – 01:46
  4. 4. No 18650, weld straight onto strip: power a bit high, 0.15 very solid; gear 100 for heavy work

    No 18650 at home, weld straight on like this; feels like the power is a bit high; 0.15 strip is already very solid, very beautiful; only gear 20, gear 100 will handle heavy work, very nice.

    01:47 – 02:28
  5. 5. Gripe about the short cable, wants 2 m; 0–100 gears, heavy welding no problem

    Every spot welder’s cable is this short, 2 m would let you batch-weld without following it around; maybe cost or unsuited to carrying high current; 0–100 gears adjustable, heavy welding no problem, beautiful.

    02:28 – 03:09

Bill of materials

AWithZ high-power sample (UK1) ×1100 gears, foot pedal / manual / auto, small screen · Under review
Foot pedal ×1Foot control
Nickel strip 0.15Test welds

Creator’s tips

  • First time and unsure of the gear, try gear 20 on 0.15 nickel strip 01:19
  • Comments: the pen cable can’t be long — a long cable adds resistance and hurts the instantaneous current

Pitfalls

  • Creator admits not knowing how to set it and misstates the thickness; comments criticise ‘recommending without knowing how to set it’ 01:05
  • Comments: above 0.2mm it won’t hold (experience)

Li-ion safety

DIY lithium packs can catch fire: check cells for shorts before welding, always add a BMS, never skip insulation and fusing on high-current builds.

Quotes

“Many people said this welder is a bit underpowered… so today I have to introduce you to another one, also AWithZ, and they sent me another sample” 00:00
“All these spot welders, the cable, I don’t know why they’re all so short” 02:28

Comments 35· 10 real comments collected

Comment insightsanswered 1 · open 0 · corrections 4

Answered by the creator

Saw the health-kettle repair video — do you do repairs? 1
(liked by the creator)

Corrections from viewers

Doesn’t even know how to set it and still recommends people buy it; a longer cable adds resistance and cuts the instantaneous current 1Valid
The cable can’t be long — a long cable means not enough current; cable is pricey, and length adds internal resistance (several people)Valid
This little tool is fine under 0.2mm, above that it won’t hold; a microwave transformer can weld 0.4Plausible
Self-taught, hasn’t figured it out yet, and already sellingValid
Cable lengthSelling without knowing the settings0.2 ceilingP120
昌
昌达家电维修8 mo ago · Zhejiang

Bought an AWithZ P120, works great, just pricey

立
立哥在奔跑……7 mo ago · Guangdong

Doesn’t even know how to set it and still recommends people buy it. A spot welder cable that’s too long adds resistance, cuts the instantaneous current and so hurts the weld

家
家电医生7 mo ago · Fujian

This little tool works under 0.2mm; above 0.2mm it just won’t hold. Mine’s made from a microwave transformer, works, welds up to 0.4mm.

认
认真努力的kk子8 mo ago · Zhejiang

Hello, I saw your health-kettle repair video — do you do repairs? Liked by the creator

朱
朱艳冰箱空调维修店7 mo ago · Yunnan

Nickel strip, I guess

百
百草花兔饲料7 mo ago · Jiangxi

Learn a bit about current, voltage and cost and you’ll know why it’s short

B
Bruce7 mo ago · Guangdong

Can’t be long, a long cable means not enough current

枫
枫之骄子..7 mo ago · Macao, China

Seems there’s a ¥180 hand-built DIY one that also works well, except the welding pen is welding pins plugged straight into the lead.

晨
晨峰7 mo ago · Shandong

Self-taught, hasn’t even figured it out, and already selling stuff?

*
***4 mo ago · Hubei

Cable is pricey, and a long cable adds internal resistance.

昌
昌达家电维修8 mo ago · Zhejiang

Bought an AWithZ P120, works great, just pricey

立
立哥在奔跑……7 mo ago · Guangdong

Doesn’t even know how to set it and still recommends people buy it. A spot welder cable that’s too long adds resistance, cuts the instantaneous current and so hurts the weld

认
认真努力的kk子8 mo ago · Zhejiang

Hello, I saw your health-kettle repair video — do you do repairs? Liked by the creator

家
家电医生7 mo ago · Fujian

This little tool works under 0.2mm; above 0.2mm it just won’t hold. Mine’s made from a microwave transformer, works, welds up to 0.4mm.

朱
朱艳冰箱空调维修店7 mo ago · Yunnan

Nickel strip, I guess

百
百草花兔饲料7 mo ago · Jiangxi

Learn a bit about current, voltage and cost and you’ll know why it’s short

B
Bruce7 mo ago · Guangdong

Can’t be long, a long cable means not enough current

枫
枫之骄子..7 mo ago · Macao, China

Seems there’s a ¥180 hand-built DIY one that also works well, except the welding pen is welding pins plugged straight into the lead.

晨
晨峰7 mo ago · Shandong

Self-taught, hasn’t even figured it out, and already selling stuff?

*
***4 mo ago · Hubei

Cable is pricey, and a long cable adds internal resistance.

昌
昌达家电维修8 mo ago · Zhejiang

Bought an AWithZ P120, works great, just pricey

立
立哥在奔跑……7 mo ago · Guangdong

Doesn’t even know how to set it and still recommends people buy it. A spot welder cable that’s too long adds resistance, cuts the instantaneous current and so hurts the weld

家
家电医生7 mo ago · Fujian

This little tool works under 0.2mm; above 0.2mm it just won’t hold. Mine’s made from a microwave transformer, works, welds up to 0.4mm.

认
认真努力的kk子8 mo ago · Zhejiang

Hello, I saw your health-kettle repair video — do you do repairs? Liked by the creator

朱
朱艳冰箱空调维修店7 mo ago · Yunnan

Nickel strip, I guess

百
百草花兔饲料7 mo ago · Jiangxi

Learn a bit about current, voltage and cost and you’ll know why it’s short

B
Bruce7 mo ago · Guangdong

Can’t be long, a long cable means not enough current

枫
枫之骄子..7 mo ago · Macao, China

Seems there’s a ¥180 hand-built DIY one that also works well, except the welding pen is welding pins plugged straight into the lead.

晨
晨峰7 mo ago · Shandong

Self-taught, hasn’t even figured it out, and already selling stuff?

*
***4 mo ago · Hubei

Cable is pricey, and a long cable adds internal resistance.

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