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. 56 | Reborn as the ancient Greek god of labelling

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

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

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?

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

AWithZ high-power spot welder — welding lithium cells, handy and effective

AWithZ UF20B supercapacitor spot welder: small size, big power

Hand-building FPV drone packs, part 1! Not easy to make

Cells dead after two years without charging — repairing a Xiluopu scooter Li-ion battery

48V Li-ion battery cell-replacement repair

Re-celling a 48V Li-ion battery

Stair-climber lithium battery doesn’t last — rebuilding it as a higher-capacity pack

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

Building a lithium-powered electronic magnifier to hunt for gold inside chips

0.15 copper stacked on nickel-plated strip, the result)