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Hydroxy welder from hard drive platters. Answered

I've seen and built HHO generators before, and have been able to build a rig that produced a flame big enough for welding... before it fell apart. But I'm having trouble with the funds and time to get thinking and do some real engineering. To put it simply i've hit a brick wall with this idea and i thought Instuctables.com might be a good place to discuss my problems and get other people thinking too. my plan was to create a wet cell hydroxy generator with hard drive platter, why hard drive platters? because they are plated in platinum.... the best substance known to man for electrolysis. I just want sombody to share my ideas with that wont say somthing like " uhhh what's a hard drive?". Please help, I'd love to get info and opinions from sombody other than google once in a while.


if u go junkyarding u might find catalytic converters. Thes will have lotsa surface area, assuming they havent eroded away too much. Unlikely to be free, but cheap(ish) maybe.

cool idea! i was just trying to think outside of the box with this kind of thing. like redesigning the container or a new material for the electrolysis or somthing else that re-creates the idea at hand rather than improve on the same idea.

Not all HDD drives use platinum on the discs, in fact only a small fraction does.

Also, at least during all my tests with them, the surface is an isolator.

Instead of using HDD's you could try lead oxide for the electrodes.

why, thank you kind sir. and where might one get lead oxide from. (yes a stupid question but bear with me)

pictured somthing like.... a chubby pringles can filled with platters
about 1/32 of an inch apart. run off of a (or multiple) computer PSU's.
Yea im kinda big into the "reuse" part of reduce reuse and recycle. i
just wish i had more than one dump around me, the stuff people throw

You are dealing with explosive gas mixes and possible high pressures - you don't want to use a chips can for that!

High pressure PVC pipe if you don't have to see inside or properly glued and thick polycarbonate sheets to form a tank.

You also have to consider the flow of bubbles and water through your plates - the higher they are the less effective on the top due to the bubbles running up the plates.

Lead oxide can be formed on graphite electrodes using Lead nitrate in a galvical process, there are also youtube videos available showing other means of making lead oxide electrodes.

On a small scale you could use fine stainless steel mesh (marine grade at least) as the electrodes.

A quick Google search would also provide you with this Instructable:


I understand that im working with dangourous gasses and all that jazz. i was just trying to describe the container shape. but thank you for the details with my question. and i have reasearched this topic alot, and i just wanted to know if its any good of an idea to use platinum on a thin level.

thanks for the input!

incidentally, welding with hydrogen will make for brittle welds.

it wont be brittle if you use a flux to cover the weld when its molten. Like brazing rods with borax.

The hydrogen causes a brittle weld because people crank it to max and use the extreme heat to weld it together, use a flux to coat whatever it is your welding and it will shield the metal from the hydrogen and oxygen in the air and the heat from the torch will be transferred through the melted flux to heat the metal to welding temp.

basically buy borax, apply generously to the welding area, melt the borax until it becomes glossy and clear, and covers the entire weld, the bring the metal up to welding heat and weld together with a flux coated brazing rod.

Its difficult to explain simply, just do a google search and see what comes up.