Picture of DIY HHO Torch (Water Torch) for only $4

In this Instructable I will show you how to make a simple, cheap and effective HHO torch that can melt small pieces of metals like tin cans. This can be used in various applications it can be connected into your fire torch or in your car which is also known as the HHO Hybrid Generator which can reduce your fuel consumption although I don’t have a car I am still a 12 years old boy.


A lot of people are asking what and how does a HHO Torch/Generator works. It is simple a HHO torch/Generator separates water molecules into gas, now you will have a mixture of Oxygen and Hydrogen gas which can give a powerful kick or flame.


- You can connect this in a fire torch pin which I will show you how to make.
- You can use this for your car to reduce fuel consumption. But this will not be mentioned for this Instructable, it would be better of you Google it.
- You can use this to weld o melt thin metals

Warning: It is not my responsibility if any of you gets injured or burned so don't blame me for your mistake. Luckily I made some safety features which are already tested and prevents some common problems with HHO converter like explosions and implosions which creates cracks or even explosions. Hydrogen are highly explosive especially of you mix it with Oxygen. Batteries not included.

Be sure to rate this a 5 star. This instructions are very rare and hard to find.
Remove these adsRemove these ads by Signing Up

Step 1: Materials

Picture of Materials

You Will Need:

- Vinyl Tubing/Fish Tank Tube 2m (50c)
- Air Tight Container x2 ($1) 
- Fish Tank Tube Connectors x3 (30c)
- Stainless Steel Plates x12 ($2)
- Wire 1m (20c)
- 12 Volts Battery (revised)
- Inflation Pin (10c)

Step 2: Cutting The Metal Sheet x12

Picture of Cutting The Metal Sheet x12
Cut the metal sheets into 12 pieces. The measure should be a 2x4 inch rectangular sheet. Then cut a line above leaving a small metal for the wire to be connected.
1-40 of 148Next »
This is awesome!! A must try for this weekend!!!
day-veed4 years ago
Nice ibble'! I really wanna try it but in Singapore, 12 year old boys like me aren't often seen cutting steel and making a torch...
PS: The clingwrap pressure valve was ingenius!
rimar20004 years ago
AWESOME! This is a very good Instructable! Thanks, I will try to do it!
such a nice job
icekid4 years ago
Best guide on making HHO torches. Thanks this is just what I need.
Cool project, well written and documented. I've had a build for one of these on the agenda for a while, because nobody answers any questions about them.

Compared to a normal torch how would the flame be, in terms of heat and gas flow?
diydonut3 days ago

Would highly recommend installing two check valves (sure one is great but two is even better) one at torch end and one more near the tank. I found some cheap ones online like


guruji11 month ago

It would be a good idea for more safety including an arrestor too to the pipe. Even adding brass wool in the pipe to stop flame from explosion.


tiredlumens1 month ago

Well done! I've been tinkering with hho for a wile now and I now have a wet cell made out of pvc with 10 plates of food grade stainless and it works wonders! Wilth my experience I would recommend that you use something other than salt or baking soda for your electrolyte: salt creates chlorine gas and is hard on the plates and baking soda produces small traces of carbon monoxide and dioxide wile it harshly eats away at stainless.

kloj101 month ago

hey i have some questions wondering if i can get in contact with you?

ldmorgan2 months ago

Super 'ible! Really like the cling wrap safety trick. Please accept Max Genius Award!

rarial16 months ago

What's the purpose of the bubbler ?

Leon. rarial12 months ago

The bubbler prevents flames from travelling up the pipe and into the generator, which could cause an explosion!

To remove excess water to get pure hho.
GustavF1 rarial15 months ago

It protects the generator itself by taking the blast if something would explode, which keeps both you and the generator safe.

You can also use the back of a ciggarett as a backflash.

dreyfuss121273 months ago

Very nice instructables i made one only with 9 plates instead, the only problem is the flame arrestor if you do not have one the hydrogen could back fire and cause the whole rig to blow up (trust me i know for experience) and it does hurt...BAD

shaun.forcier3 months ago

i used steel wool as a spark arrester and it works fine the first time i tried it without a spark arrester it backfired and blew my bubbler to bits also you i have found that if you are in fact going to use the torch for a longer amount of time try using a liquid that evaporates quickly in the bubble like acetone this will evaporate quickly and help keep your tip cool otherwise you could melt the tip

i doubt this set-up actually provides sufficient pressure to act as a torch. A lighter, maybe, but not a torch. Torches need their fuel/oxygen mixture to be highly pressurized so that the gases can come out fast enough to make a strong jet of fire. It also helps the gases to flow faster than they're being burned up and "keep up with the fire" helping prevent back-flash. It needs something to build up the pressure and ALSO regulate it. Refer to blowtorches.

roman.botev3 months ago

" Why you should not use stainless steel electrodes for electrolysis "

Many people using the electrolysis method for rust reduction swear by stainless steel, stating (incorrectly) that it's not consumed, stays clean and seems safe.
Stainless steel is indeed consumed when used in the electrolysis process, although slowly. The main problem with using it is the hazardous waste it produces. Stainless steel contains chromium. The electrodes, and thus the chromium is consumed, and you end up with poisonous chromates in your electrolyte. Dumping these on the ground or down the drain is illegal. The compounds can cause severe skin problems and ultimately, cancer. Hexavalent chromate is poisonous. These compounds are not excused from hazardous waste regulations where household wastes are.
These compounds are bad enough that government regulations mandate "elimination of hexavalent chromate by 2007 for corrosion protection."

Does your electrolyte turn yellow? That's a sign of chromates.

If you have been using stainless steel for the anodes (positive electrodes), wear rubber gloves when working with or near the liquids. If you need to dispose of it, allow it to evaporate into powders and dispose of the powders in sealed containers during your local "hazardous waste clean-up days".

Best bet - don't use stainless steel no matter how tempting it is.

skwoorl3 months ago
What thickness plates work best? Must they be stainless? How are the magnet wires attached?
Nigelr14 months ago

You need a metal pipe to connet to the flame nozzel if you use for longer time, or plastic will melt.

jadedhills2 years ago
Try using Stainless steel mesh instead of plates give more gas
or aluminium
aluminum corodes

aluminum works better than steel since it does not dillute the solution with corrosion. But you have to wash the aluminum plates to remove the plaque buildup.

my wookie1 year ago
i just used 2 large aluminum heat sinks for plates.
ASCAS (author)  my wookie1 year ago
That's good, but be sure to sand the aluminum with sand paper
5imx ASCAS1 year ago

how should i connect "terminals of the metal plates? one wire to the little tap of the top left side, where does the other one go?

ASCAS (author)  5imx1 year ago

Each wire connected to different plates. The process is called electrolysis. Try to google it to get a better glympse on how it works.

Hi, what's your plate pattern?


Are you using plain tap water or distilled water?

You should add salt or bakingsoda to the water to get way better effekt.

If you use distilled water it won't work at all because totally clean water can't conduct electricity, it is the minerals (like salt) or metals.

But be carefull when using salt, if you do you should be outside if you deside to build a large scale HHO-generator. Saltwater in contact with DC creates chlorid gas which will harm you in large amounts or under longer uses.

Bakingsoda does not create chlorid gas therefor you may use it inside the house or your garage even if you don't have any good ventilation there.


+ More safe

- Less efficient.


+ Way more efficient and cheaper

- Could be directly harmful, chlorid gas moves straight for the lungs

Another tip is to heat the water or just take take hot water from the tap, this will speed up the reaction even more and you will get larger torch with more gas in it. It will also probably increase the amount of gas and make the reaction time last longer.

No i'm not from the United States

@GustavF1 thank you for the advice. salt just shorts the plates and burns out your power supply.

@ASCAS , i'd like to know the plate pattern you used. Was it just positive plates alternating with negative plates or is it something else?

mcevanlong7 months ago
you should make an update
zachanator7 months ago
Nice design i hope it works for me!!!!
ToXiCATOM1 year ago
ruzish1 year ago

any proven result ?

ASCAS (author)  ruzish1 year ago

Yup! You can certainly produce a thin flame, adding a larger nozzle would result to backfires. I have a new design that would produce more gas and a much more thicker flame.

The Commander is pleased, well done Lad

ASCAS (author)  TheCommander1 year ago

Thanks! :D

1-40 of 148Next »