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

An afterburner on a car turbo? Hardcore mod

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

Teaching you the 8-cell car jump starter

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

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

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

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

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

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

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

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

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

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

0.2 copper straight onto a Jiashikai negative — I’m telling you, don’t try it! It just won’t hold…

Don’t copy this — even Wang Duoyu wouldn’t fund it

AWithZ UF20B supercapacitor spot welder: small size, big power

First-person immersive look at a day in the life of an appliance repairman

Building a car jump starter from supercapacitors + lithium cells — the cells store energy, the supercapacitors deliver the big current; 21700 4000mAh cells in 2P4S, 2.7V 360F supercapacitors, two together should push past 100A instantaneous, CCA estimated 500+, should start a 2.4L car; final assembly and test next

This lesson is all detail for beginners — the chapter of the hand-built Li-ion course that keeps you from getting blown up, bro! Old hands, now it’s your turn to roast me

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

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

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

Boston 5300 Li-ion 24V 8P6S pack picked up at a scrapyard, repaired successfully — but no BMS; ordered one online and will test capacity when it arrives

Hand-built monster fan

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

Hand-building a thruster Li-ion pack,

AWithZ P30C spot welder — now I can build my own 21700 power packs