Episode 48 | The angler’s arms are all red

Class is in session, everyone — the ‘Whampoa Academy’ of the tool world

Ep. 37 | Batteries? I can’t repair them, but I can build them

Can't fix it, but I'll build it — POV hand-made pack

Ep. 41 | Whatever you like watching, I’ll make it — what else can I do

Ep. 35 | How handy is carrying 220V mains power outdoors? A homemade multi-function portable power station that can cook rice and run a hot pot on its own battery

Ep. 42 | Turning a storage box into a solar-charged outdoor power station? Build a fun, practical multi-function solar-charging outdoor power station from a plain storage box — so useful!

Ep. 56 | Reborn as the ancient Greek god of labelling

Ep. 28 | What if you bolt an afterburner onto a car turbocharger? Turbojet gen 14 doubles its thrust

Bring 220V mains outdoors — DIY power station

An afterburner on a car turbo? Hardcore mod

Ep. 37 | A high-capacity power bank this easy? Build one at home for ¥20-odd — a huge-capacity, honestly rated power bank worth ¥100+

Building a car jump-starter power bank from 8 tabless Ampace JP40 cells

Building a 32140 LiFePO4 battery

DIY high-power flashlight tutorial: three 18650 cells and an e-bike headlight for under ¥20

Ep. 41 | Home speakers built from car speakers — surprisingly good? Turning car audio into a home stereo that sounds this good

Ep. 45 | An adjustable power supply with high-end features at rock-bottom cost? Building a portable, precise, digitally controlled adjustable supply from simple materials at the lowest cost — the result is a surprise

Universal magnetic base build guide — the step-by-step build guide for the universal magnetic base is here

Ep. 5 | Tearing down a ¥20 Pinduoduo brushless folding mini fan — incredible value

Ep. 5 | Teardown of a ¥20 Pinduoduo brushless folding mini fan — surprisingly good value

A primary-school kid builds a 20,000mAh power bank — a 20,000mAh high-capacity, fully transparent cyberpunk-style one for a neighbor

Teaching you the 8-cell car jump starter

7.4V glue-stick mini fan tutorial, adjustable speed

Ep. 36 | A Bluetooth speaker bought for under ¥1 sounds amazing after the mod! A junkyard speaker turned into a wireless Bluetooth speaker — the result is a real surprise

I built a ‘New Year atmosphere machine’? If your village had a voice-controlled remote firecracker toy like this, would you stay home a few more days over the New Year

Ep. 43 | A homemade electric grass trimmer? A simple electric trimmer built at home from scrap, and it works really well

A first-person, immersive day in the life of an appliance repairman

[T.O.P.] Getting into FPV on a budget — making money from it is easy; DIY long-range packs and power stations, AWithZ

A big power bank this easy? ~¥20 at home

DIY flashlight — 3×18650 + e-bike LED, under ¥20

A first-person, immersive day in the life of an appliance repairman

Ep. 66 | How to hand-build a portable desktop mini drill press? Build a DIY maker's own desktop drill press that can even drill into rebar

Spent ¥127 on a high-power flashlight that lights up a whole building — no more fear of walking at night; 15 cells give 12 hours of runtime

A programmer goes home and fixes appliances for the old folks? I’m an embedded automation full-stack developer, and I repair appliances for the elderly in my hometown

Ep. 2 | Spot welder comparison — a home-built one off Xianyu vs a bought one! Money talks! The quality really is different

Building a 24V Li-ion battery from 16 × 32140 cells

DIY an ultra-long-runtime seven-color night light? For the last science maker class of the term, I hand-built an ultra-long-runtime seven-color night light as a gift for my students

Unboxing and testing a small handheld spot welder — very practical and handy

Second version of my low-cost DIY soldering iron: upgraded to Li-ion power plus a printed shell, more convenient to use

Why does a 48V e-bike Li-ion battery have such short range?

Universal magnetic base — step-by-step

Building a 48V e-bike battery from 78 × 18650 cells

Trash to treasure? Making my own solder-fume extractor! The perfect weld

Ep. 30 | One video teaches you how to build a 21700 pack — never worry about long-range battery again

Built a 48V LiFePO4 battery for the family e-bike myself — the whole process on record, in a mere 30 minutes of video

Ep. 61 | Last time a friend asked for one made from 18650s — today we build it; the full build is in the video, please watch patiently

You can build a lithium pack at home

First-person, immersive — a day in the life of an appliance repairman

The ¥9.9 mini fan I bought last year stopped charging — repaired with one bigger cell, no more runtime anxiety! The same home battery welder as in the video is in my shop window

Lithium batteries, spot welder — I recommend this one, compact and powerful

Got another spot welder, the AWithZ UK1 portable Li-ion spot welder — unboxing and review! Plus my experience and thoughts on spot welders 🤗 If you’re into spot welders, come have a look

Beginner’s money-saving guide to hand-building lithium packs

Build your own portable knife-sharpening gadget that every home needs? Kitchen knife gone blunt? Build a portable belt grinder on the cheap and never worry about a dull knife again

Do you really have to hand-build a spot welder to hand-build Li-ion packs? Don’t take my detour — see what you make of this one

First-person immersive look at a day of repair work

Got it now? Building a 21700 Li-ion pack with an AWithZ welder

A ¥25 ‘brushless’ handheld car vacuum bought online — opened up, it really is a brushless motor

AWithZ U3 welder — build your own 18650 pack, tutorial

A first-person, immersive look at a day of repair work

Fixing a fan’s laptop battery that died in storage