How I Built my Ammo Can Rocket Stove - a Small Homemade Wood Burner (Mk II)

My Ammo Can Rocket Stove (Mk II) is a small homemade wood stove with an insulated burn chamber and a secondary burn system. It burns wood cleanly and efficiently whilst producing virtually no smoke. In this video I break the stove down and talk about exactly how I made this small wood burner. 🔔 SUBSCRIBE for more helpful videos on random subjects (It's FREE!) ➜ bit.ly/HelpfulVideosFromChris
Learn how to start an online business in your spare time ➜ freedomwithchris.com
To watch this stove burning wood without producing smoke, see my burn video: • My ammo can stove. A h...
You can buy these ammo cans here ➜ amzn.to/2BkRDLl
Don't have the time to build your own stove? Buy a ready-made stove here ➜ amzn.to/2NjlpFY
This stove is my second prototype and lots of you commented on my previous video asking me to make a new version (the Mk III) and to make a build video showing every step of the build.
I am going to do this and I am currently in the design stage of the Mk III. If you have any suggestions for improvements to this stove then please leave a comment below and you might see your idea incorporated into the Mk III!
It will take some time for me to release the Mk III... (As well as the build videos, I also want to make some build documentation with measurements etc. to make the build as easy as possible for everyone.) However, from the comments on my previous video, I know that some of you are already building stoves so I decided to make this interim video to help you out.
For more information about this stove see my website post: randomchris.com/randomness/my-...
Subscribe to see more of my videos (It's FREE!) ➜ bit.ly/HelpfulVideosFromChris
Cheers!
Chris 👍
--------------------
'Random Chris' is a Helvellyn Ltd brand. Disclaimer: Due to factors beyond the control of Helvellyn Ltd, we cannot guarantee against unauthorized modifications of this information, or improper use of this information. Helvellyn Ltd assumes no liability for property damage, injury or death incurred as a result of any of the information contained in this video. Helvellyn Ltd. recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, open flames, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of Helvellyn Ltd, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not Helvellyn Ltd. Disclosure: any links in this description may be affiliate links. If you decide to buy some items from them, Helvellyn Ltd may receive a small percentage compensation for having suggested the suppliers to you. (This costs you nothing) As an Amazon Associate we earn from qualifying purchases. Helvellyn Ltd only recommends suppliers and products which we believe in, so there is never any conflict of interest. ***Carbon monoxide is produced by any open flame. This gas has no smell and can easily kill. (People die every year from carbon monoxide poisoning. Most go to sleep in an enclosed space with insufficient ventilation and then just never wake up.) You must ensure you have adequate ventilation and it is highly recommended that you use a CO detector if using an open flame in any enclosed space. Galvanised steel can also give off toxic fumes at high temperatures so beware of this if using galvanised steel components.
#diy #ammocanstove #rocketstove #woodburner #woodstove

[@christopher_barr]

Watch this stove burn with zero smoke: kzbin.info/www/bejne/jJWag3mtrrarqKs

[@solarpall]

Awesome!! This is genius! I am waiting for the version 111, I would like to see a ash clean out drawer and also buy one from you when finished. :)

[@JediStockTrader]

What is the burn time on one wood fill Christopher?

[@rcruzriovista]

Love it!!! Some ideas to improve the design is to add a V shaped deflector around the exhaust outlet pipe. This would make the hot gases have to go around one more obstacle before exiting the stove. Another thought is to insulate the baffle to increase temperatures. And another thought is to improve heat exchange by creating a gap between the insulation and the outside wall, and allowing the hot air from the second chamber, (above the baffle) to go into the space between insulation and outside wall metal. This would make all the walls heat exchangers! Also adding a damper to the stove pipe can help regulate burn times.

[@kcjazz62]

Hike Yakima Washington ⬅️ I will chime in with a spark arrester at the flue entrance, which will remain clean by the extreme temps & adding a damper on both the intake & exhaust to control the burn/temps. Once it gets too hot, it needs to be adjustable, which also conserves fuel. I am thinking that an accessory water heater via copper coil that slips over the flue pipe & can be rotated to the sides or back and into a billy-can, etc. would be quite simple. A half-height fold-down warming plate opposite the door would also be simple. To offset the weight of the warming plate, drink warming plates on the door side would suffice. A clean design & great job!...

[@mountainhigh6684]

Thankyou Christopher, it’s the most brilliant version of a rocket stove that I’ve seen yet! I love the smokeless part and the shape and size. I’m looking forward to seeing the 3rd version. I hope it will be even more simply built, and I’d like to see you building one from start to finish.

[@mikemcgown6362]

Looks like something any motivated individual could build. Simple build on complex thoughts. Thanks for the video!

[@TC-dw6wg]

Excellent Chris! Can't wait to see Mk III.

[@IamDiamondDraco]

I'm late in responding due to being busy but thank you for the explanation Chris! I'm about to get started on my build again and this video was VERY helpful! I started posting details of my build on my website and plugged yours as well. Thanks so much!

[@azclaimjumper]

Almost 2 years; I'm still waiting to see what you've come up with for Mk III

[@markspc1]

Great. Thank for showing the details of your Ammo Can Rocket Stove !

[@christopher_barr]

My pleasure! Cheers, Chris 👍

[@jamesgunter7699]

Great help. Best info of amo can on youtube.

[@kimcurtis9366]

Chris, I really like what you have done with this! It is quite efficient and I'm going to build one and then one out of a 20mm ammo can for larger areas! Thanks again, for making the How-To vdeo! Cheers!

[@smilerjon3670]

This is my favourite build on youtube. Well thought out and very well broken down to help someone make and understand the workings of it. Thank you :)

[@christopher_barr]

Thank you Jon. :-) Chris 👍

[@kathrynkenyon785]

THANKS CHRIS! GREAT BUILD...ENJOYABLE VIDEO. The way you built the baffle was great. Not everyone has access or knowledge of welding, so learning that cool trick on putting in the flew is cool. LOOKING FORWARD TO SEEING MACH III!

[@christopher_barr]

Thanks Kathryn - the Mk III is coming one day, (I've already got the design in my head), there just aren't enough hours in the day at the moment! Thanks for watching and commenting. Cheers, Chris

[@latitudeash]

Good tech, well done. Simple yet effective. Great for camping heat.

[@christopher_barr]

Thank you for your comment. Cheers, Chris 👍

[@SasquatchnAround]

your idea for the air intake pipe was great. was having trouble with the draw but I installed what you did and it does phenomenal now. thank you sir.

[@christopher_barr]

Thank you for your comment Chad. My pleasure - congratulations on your build! 👍

[@murphragous]

Malakai Cole - 2 weeks into the Trump Shutdown, more like Make America Wait Again!

[@duhhhh1723]

Can't wait for the secret stove and the mach three ,thank you for taking time to share your great ideas 👍

[@BarryDickfingers]

Brilliant, mate. Some great ideas in your stove Chris, I've been stuck on how to affix and secure a flue to a metal box and your clear example solved it for me. Thanks for sharing, subbed!

[@christopher_barr]

Cheers Baz, welcome aboard! 👍

[@sunbladerr]

This the best article on ammo can rocket stove. Thanks, I can't wait to make one. I don't have the ability to weld at the moment, so this is perfect,

[@christopher_barr]

Hi there, thank you for your comment. The Mk III won't have any welding at all so hopefully it will be perfect for you. Cheers, Chris 👍

[@Hillbilly-Bob]

Great instructional video Chris! Couple ideas for the next generation build: One, add butterfly dampers in both the large (main) air intake and the exhaust, so you can control the heat better. Two, add a simple, flat, metal sheet surface to the top for cooking, somewhat oversize to accommodate a fry pan, only with a slot cut out of the middle to keep the handle functional for easy portability. Another idea I have, call it a bonus tip, is, for more permanent installations anyway, to add a large, maybe baffled, chamber in the exhaust to capture some of the heat that currently escapes up the chimney, before a second pipe section conducts the exhaust gases out of the living space. This may be a bit too much for this small type of stove, however. Over-complicating it, so to speak, and detracting from its overall simplicity and handiness.

[@christopher_barr]

Hi Bob, thank you very much for your thoughts. I love the idea about the slotted metal cooking surface! Extra heat release from the chimney is a great idea, but this will be dependant on the individual installation and I imagine there will be lots of different uses for these stoves. The Mk III will have a water heater option for off-grid hot water, which I believe will be very useful. Cheers! Chris 👍

[@donniemccumber9313]

Awesome idea. Love the secondary burn chamber. Good job!👍

[@christopher_barr]

Cheers Donnie 👍

[@ChrisS-ep5qy]

excellent discussion

[@mauriccicastanelli2588]

Thanks Chris, I think the baffle is the secret along with the pipe line on the other side I have watched other people build a stove but so far your's takes the cake, I hope to see the video step by step great job thanks.

[@rogerbcr]

love the stove. can't wait for the MkIII

[@christopher_barr]

Cheers Roger 👍

[@curtisibarra1600]

Very nice Chris, I'll be making one soon and installing it in my camper van

[@christopher_barr]

Hi Curtis, thank you for your comment. Good luck with your build, I'm sure it will be a great addition to your camper van! Cheers, Chris 👍

[@darkkenzi]

VERY nice design!!! Can't wait to see MK3

[@christopher_barr]

Thank you 👍

[@ColoradoCJ5]

Finally got around to making my stove yesterday to the specs you show. I used steel rivets instead of welding but everything else is pretty much the same. I did use copper for the secondary intake. Works great!!!! No smoke, just as you described. I will be installing it in my workshop in a week or so, after I make necessary accommodations for the flue and stove backing. Thanks again for your creation!!!

[@christopher_barr]

You're welcome Scott, I'm sure your workshop will be much more inviting in the winter with your stove in there. Cheers! Chris 👍

[@ColoradoCJ5]

Christopher Barr - Random Chris No, thank you. Stoves like this are a big deal. A friend of mine that ran for Eastern Michigan University was a refugee in Eastern Africa. Items such as this a great for people like me but can be essential for people like him. Great work!

[@mikasjoman]

@@ColoradoCJ5 how long did it hold up? I am thinking of making one as a prepper/camping stove, so for the prepper part, I would like it to hold up for a while (my country just asked everyone living here to prepp for war, and its a damn cold country). So in case of war, I would like it to hold up more than 50 hours. More like a few thousand. Do you think that is it feasible if I mod it with vermiculite and steel sheets inside?

[@JeffsTravels]

Excellent video. I am very impressed with the secondary burn engineering. Can't wait to see the MK III when it comes out.

[@christopher_barr]

Thank you Jeffrey, the Mk III is in the pipeline... Stay tuned! Cheers, Chris 👍

[@sarahleroux8279]

Awesome thanks for giving construction details! I.I'm in alaska thats gonna helpful just gonna add my spin!

[@JBOutdoors]

Awesome video great work! Liked and subscribed

[@juanandrade7967]

Thanks for share your knowledge!!

[@christopher_barr]

+Juan Andrade You're welcome! Cheers, Chris 👍

[@PurplePixie333]

Your just brilliant... I can't wait to see the mach 3!!!

[@christopher_barr]

Thanks :-)

[@timothydube3046]

I will weld the stove I make with plate metal just to practice welding, but I love that this is able to be made from scrap materials such as old ammo cans with simple bolt and drill design. It gives me an inspiration to make a bunch of these to give away to homeless folks, because they are light and can be easily carried and produce little smoke to irritate those nearby. Here on the West Coast of the USA we have recently had some uncharacteristic severe winter weather temperature drops and as a result a lot of tragic deaths and frostbite injury/amputations to our homeless citizens.

[@christopher_barr]

Hi Timothy, thank you for your comment. Yes, these stoves would be very useful for lots of people in a massive variety of situations. I imagine giving one of these to a homeless person in the winter would be absolutely priceless to them. Good luck with your building - I hope to see these stoves being made all over the world! Cheers, Chris 👍

[@se-outdoors]

very informative video Chris.

[@christopher_barr]

👍

[@williampennjr.4448]

great idea's

[@calebphelps1836]

Beautiful job i want to make one for teardrop camper

[@sarahleroux8279]

Okayyyy! Where is MKIII? Good job man

[@supergnome4401]

Great project and a nice use of an ammo tin. I found your blog and videos while researching a slightly bigger rocket stove I'm planning to build. I'm looking at adding a copper coil to the secondary burn chamber and using the thermal movement to cycle water running through it. The eventual plan is to have a cold inlet from a pool pass through the rocket stove and then return back to the pool. If I can work in a heat powered fan to be turned by the pipes returning to the pool, this would then act as an active air ram for the stove. Between you and green shorts I've got a head full of ideas, and I look forward to seeing what you have planned for future builds, my only hope is that it doesn't encourage me to start over with however far I've got by then. 😀

[@daphneraven6745]

hi, super gnome! I’m wondering if you ever found the time to build the stove you mentioned in this comment section. If you have, I’d sure like to see the video, assuming that you made one.😊

[@supergnome4401]

@daphneraven6745 Yes, I did, I made it with a 25m coil of copper pipe in the upper chamber, and with a cold hose attached at one end, boiling water came out the other. Unfortunately, I wanted to use it for heating a hot tub, but discovered that you can't run hot tub chemicals through copper pipes.

[@graceygrumble]

Thanks for this. I don't think I could do the welding bit, but I'm sure I could work around that - great stuff!

[@christopher_barr]

You're welcome, thank you for your comment. The Mk III will be designed so no welding is required. As you say, you can easily find ways around it to build one of these. Cheers, Chris 👍

[@azclaimjumper]

THIS VIDEO IS ALMOST 3 YEARS OLD; when will you finish with your Mark III? I'd like to suggest you use a 20mm ammo can instead of a 50 calibre ammo can. The increased capacity for wood means you won't have to wake up in the middle of the night to add wood. I've just subscribed & rang the notification bell. Put legs on the stove then add the air intake on the stove's bottom & add a damper to control the air intake volume.

[@igualnimp]

oh waw putting legs what a revolutionnary idea! Any more orders, Sir? Am i free to go, Sir?

[@troybelanger974]

A great little stove design! Chris here is my 2 cents for your next variation. Wood stoves "suck" the heat out of the room. A cool air intake helps that problem. A piece of duct work could be connected to your rocket intake with a damper to solve that problem. So one would have a rocket stove or a more efficient wood stove. All of the current tent stoves draw from the room. A door on the end of the container rather than the middle could handle longer pieces of wood. So the stove might have to be configured with the hinge on the opposite side to make that work. Good Luck

[@jamesgunter7699]

Thanks for info.

[@christopher_barr]

👍

[@PurplePixie333]

yayyyy thank you for this awesome video

[@christopher_barr]

You're welcome, thank you for your comment. :-)

[@KeillorChristopher]

I love that idea I was thinking about building one like that but doing it upside down so the lid of mo-kan is the bottom so that way take that off and it allowed for cleaning so much easier

[@christopher_barr]

👍

[@tareece2406]

fantastic

[@williamwebber6533]

Loved your video brother. Bill from IDAHO. God bless you And Merry Christmas.

[@christopher_barr]

God bless you and yours William. 🙏👍

[@johnelwoodsinejr.789]

Straightening the pellet feed tube for stix will make it easier for feeding and if you make it out of channel steel pipe thats square or rectangular the end can be cut on the corner lines and riveted to the bottom and side of the mark lll to keep the stove rope use down to a minimum....but thats just a design i use here in the states ...hello from the east coast in Virginia...your videos are very useful from my standpoint as a poor man that comps for my peace sometimes.

[@bikefarmtaiwan1800]

Great stuff! Nice one mate! Love life :)

[@sergiogomezphotography]

Awesome Chris! What happened to the third generation Ammo Can Rocket Stove??? Make it Chris! Thank you for your video, great stuff.

[@christopher_barr]

It's coming one day Sergio - I just have a crazily busy life!... Thank you for watching and commenting. Cheers, Chris 👍

[@crackin2000]

this video may actually save lives. im gonna build one

[@christopher_barr]

Hi Crackin2000, someone did contact me on my website regarding humanitarian use of these stoves in refugee camps. I hope that these stoves can help others to stay warm... Cheers, Chris 👍

[@martindolben9757]

can't wait to see the smaller secret stove.

[@Matsohj]

Looking forward to the Mk III !!!

[@christopher_barr]

I'm working on it... I can't wait to get it out there for people - I just wish there were more hours in the day! Cheers, Chris 👍

[@jamesmason7124]

Thank you for sharing your video and thoughts with us I subbed to your channel

[@christopher_barr]

Cheers James, welcome aboard 👍

[@adddad9779]

Hi!!! I'm not sure if you have built your next version or not. This is awesome by the way!!! my only change would be to give up the rocket stove part in exchange for an air intake control system. the benefit to secondary burn us you can choke them down for longer burn times without all the smoke. Just my $0.02, but there may be a very valid reason you didn't do that. Very cool and Thank you for your content.

[@christopher_barr]

Cheers Jason, suggestions are always welcome. Thanks for watching and commenting 👍

[@rickahrens5994]

Hope to see you make a million.

[@joenathan3593]

I just made one just like this thanks to your video. would this thing last for daily use?

[@alsatful]

Very handy ! I think the handle makes it easier to carry, for a cooking area I think a handful of bolts/with nuts and maybe a washer for height put through the lid would provide a decent base for a pan or pot

[@christopher_barr]

Thank you for your comment Alsatful. Cheers, Chris 👍

[@voltennessee2514]

I enjoyed your video. Have you considered placing a small covered hole (maybe 1/4 inch) on the side where the secondary air intake is, so that you could insert a small metal rod to poke and manipulate the position of the wood inside without opening the main door? This could come in handy when feeding the stove through the primary air intake. The only problem with this that I could see is lining up the wall insulation with hole, you could use a tubular rivet. This would give you a clean and semi permanent alignment. Look forward to seeing the Mk III. Best of luck.

[@christopher_barr]

Hi there, thanks for your comment. There are lots of different options depending on the type of fuel used. If I wanted to use sticks as fuel (as used with many rocket stoves) I would just remove the primary air intake elbow and feed them in directly from the side - in which case, their position could be manipulated by moving the sticks, or as you suggested, via a metal rod through the hole. If using wood pellets as fuel the 90 degree elbow is useful for collecting gravity fed pellets and directing them into the burn chamber. I even plan on experimenting with liquid fuels which could be added once the stove has been fired up with wood... Cheers, Chris 👍

[@ducker6134]

nice thanks

[@christopher_barr]

👍

[@abdullaex4119]

Well thought out. Controlling the combustion cycle to it's maximum. However I have seen possible improvements. Nice watch by the way...

[@canoetipper019]

Hello from New Brunswick Canada, Nice looking stove. Is that a .50 Cal belt ammo can? For your Mk III: I wondering if a larger one (like 25mm belted for M242 Bushmaster) would make a better stove for heating a water and a larger space? Also for the inlet and exhaust pipes (hint in the latter) I wonder if you can readily access car exhaust pipes there. Here I could just go to our local Canadian Tire Store and pick some up. lol I missed the first stove, with the copper secondary burn tube, how did you shape it? I would like to see your MkIII build video, but couldn't find it, this one was uploaded three years ago by thelooks of things. Thanks for this one...might just have to give it a try.

[@thenorthernpike4126]

hi chris I'm building this for my 10x10 ice hut that I'm building this summer I have a 6x9 now do u think it will heat a hut up as I am a newbee for wood stoves. and what is the glass made from and where can I get it? what other options. can brazing work instead of welding? lts questions

[@gregmilstead1369]

Had a old amo can was going to toss out. Tell I saw your video. Setting on pins and needles waiting for Mark 3.

[@christopher_barr]

👍

[@tattoorocker]

Hey that's pretty awesome what temperatures does to get up too

[@victorboucher675]

Mk 4 ... add a turbo boost, call it a Merlin ... my cabin stove just sat there, no rocket feature, it was a 'gasafirer" worked great. The dreaded downdraft can happen during high winds. Added valves "air inhibitors" controls heat out put and fuel burn time. Smaller (and fewer in number) holes in the secondary combustion injectors increases velocity and the resultant turbulence which improves combustion.

[@JuniperTrekker]

Pretty neat. Suggestion for the MK3: keep the window but ditch the side door. This simplifies design....... side door not really needed since you feed it through the end. Clean-out can be accomplished through the feed port and/or opening the top. For safety, you could add a hinged cap on outside--of a flush mounted feed port. This could have a few holes in it for minimum air flow and could be propped open for feeding and max air intake. Looking foreword to your next video!

[@christopher_barr]

Thank you for your comment and suggestions. Cheers, Chris 👍

[@russelmurry1564]

Best ideas freaking great site no side door improves this window is nice but not necessary something to get it off the floor I need a heater for my van

[@altair6820]

gostei da ideia

[@christopher_barr]

👍

[@altair6820]

vou tenta fazer um um abraço

[@Ab20222]

Awesome

[@christopher_barr]

Cheers, Chris 👍

[@Ab20222]

Random Chris ....waiting for ver3

[@christopher_barr]

I've got a lot on at the moment Alex but the Mk III is coming... Cheers, Chris

[@martindolben9757]

in the rocket elbow on the back, can you put a larger burn box, on top of the elbow?

[@brianmi40]

Seems like you should try to get the intake air being released below the burning mass of wood, so that convection pulls it in even better. Perhaps the model 3 can have the copper pipe routed beneath the chicken wire that suspends the wood. Then as for the wood feed port, I think that probably takes over as the primary air intake replacing your pipe, since there would be less resistance for the air to come in that way, which is unfortunate and reduces the efficiency. So some means to re-jigger that would be beneficial. Perhaps a longer pipe (like the flue) would let you put wood in it, and then place a cap over it to block the air. Wood / sticks would then gravity feed down in to the fire box, but air would still be drawn through the pipe system.

[@gwainly]

Sorry for being a latecomer, can this be made to breakdown to fit inside the ammo can and assemble when needed. Would be great on boke camping trips but size is an issue

[@tobender4ever]

I need this. Oh my god. You're amazing. Never stop making videos. What's the difference between the mark 1, 2, and 3?

[@christopher_barr]

Thanks for your comment Adrian! My blog post explains this: randomchris.com/randomness/my-ammo-can-stove-homemade-wood-stove-rocket-stove-with-secondary-burn-system/ Cheers, Chris 👍

[@ObamaoZedong]

@Joe mama What kind of personality does a used condom have?

[@johnnyv.7724]

Hi Chris i had been checking videos on you tube you stove is the best i like to now what size is the pipe which going around the stove for Oxygen and also it need the pipe in the back of the stove or is optional thanks for share you invention with us Johnny from New York

[@christopher_barr]

Hi Johnny, thank you for your comment. I used 1/2" i.d. steel water pipes for the secondary air intake but my Mk 1 used copper pipe and I'm pretty sure I'll use copper on the Mk III, as it has superior heat transfer compared to steel. The routing of the secondary air pipe along the burn chamber increases the temperature of the air progressively so that it exits the secondary air outlest holes at a very high temperature. Cheers, Chris 👍

[@duhhhh1723]

How is the mica sheet working out ? Can you show us how to cut and drill holes in it please ?

[@babyjay3055]

Hey chris you should make an atattching anchor (only you woul ld need to invert the design 180') and i would love to see the window on the hinge side aswell THANK YOU FOR THE GREAT INFO

[@christopher_barr]

Cheers Jason 👍

[@readingbluemice]

Just had a thunk. Perhaps the stove could be mounted and secured (turnbuckles?) in a tray with legs. That way, it could be solidly mounted (say in a boat), but could also be easily removed for service or beach cooking. Like your work, cant wait for III.

[@christopher_barr]

Thank you for your suggestion Kieran 👍

[@coreybennewies1866]

Hey did you put holes in the bottom of the pipe or just the top?

[@russelmurry1564]

U can cast aircrete small batch n us for insulation on the bottom n sides

[@wolfelauria]

Very cool Chris, psyched to see the Mk lll. Question : for the secondary burn air intake pipe opening at the left, bottom, rear corner of the box; did you use the same sealing methods that you used for the flu and rocket intake? In the video I noticed that you could easily move the intake pipe up and down as needed within the burn chamber. If it is not sealed the same and it's just a simple hole, how do you keep the loose pipe from falling down into the fire when in use?Thanks in advance for your time and I'm looking forward to future videos👍🏼👍🏼

[@christopher_barr]

Hi Anthony, thank you for your comment. The secondary air pipework is held in place by an 'interference fit'. Basically the hole in the ammo can is very slightly smaller than the diameter of the pipe. The pipe only went through the hole by applying force. It can still be moved by force but does not move under normal conditions, including when the stove is hot and the components are subject to differential thermal expansion. Cheers, Chris 👍

[@wolfelauria]

Random Chris Thanks again Chris! Keep up the good work and videos!

[@edwardmcgowan8313]

Another great video, well done Chris. Looking forward to MK III. Did you ever get round to using the stove to heat your boat?

[@christopher_barr]

Hi Edward, thank you for your comment. I did do a test with it and it was like a sauna in there! In all honesty there is actually very limited room on our current boat to install this stove permanently but, if we were to be using the boat in the winter, and we didn't have electricity, it would be an absolute godsend. I could easily install it in the companionway step area when required and then run some flexible ducting up and out through a heatproof washboard section. I am also really looking forward to making hot water via a thermosyphon on the flue. This means boiling hot showers when at anchor (firewood can be picked up for free pretty much anywhere...) We have electricity included with our berth so it's just easier for us to use a small electric heater, which easily heats the boat very quickly. However, you can't beat the ambiance of seeing a natural flame and hearing burnin (instead of the hum of an electric fan) so I plan on making an even smaller wood burner that people can make for small boats in the future... Cheers, Chris 👍

[@edwardmcgowan8313]

That's interesting, maybe I'll put my plans for a boat stove on hold for now. Keep up the good work.

[@christopher_barr]

The new smaller version is going to be quite far down the line I'm afraid - I've already commited to making the Mk III so I'll have to see that through first. As long as you're not in a rush, I hope to come up with an small space wood burner that will be useful for small boats... Cheers, Chris

[@allthesame3856]

nice build, i'm still waiting for MkIII before i build mine. winter is at the door. hurry....

[@daphneraven6745]

Hi, @christopher_Barr: I’m looking around your channel, for the Mark III build video; it’s looking like I’m ready to start building my own, and it’s been too long since I’ve done any welding (not that I did a whole lot of it), so I’m really hoping that you’ve got a welding-free Version, as you alluded to here somewhere. no, it’s entirely possible that you don’t have it done yet, but it’s also likely that I’ve missed it here somewhere. If I just missed it, would you mind putting a reply with a link to the video for me please? And if you haven’t had a chance to make the video, but you have drawn up the plans, is that something you would share? I sure appreciate the hard work that you’ve put into this particular project, and I am more grateful that you decided to share it. Thanks very much and I hope to hear from you soon!😊

[@rick43pen]

lol. Whatever happened to the mark3? Also what function does the window door serve other then ascetics?

[@leonardmagnus8072]

Do you think the Mk II will burn wood pellets and work the same?

[@drdr76]

I was thinking of using ceramic tile instead of thin sheet of metal on the side and back to insulate it. Would that work better? There is plenty of cheap ceramic tile at the local Habitat store.

[@nathanlitster9267]

Wondering if this design could be applied to a 20mm ammo can. would the baffle and secondary air be all moved up higher? or stay down low? Thanks!

[@christopher_barr]

Yes, you could use a similar design. I would have the area of the exhaust gas exits at least the same as the area of the flue. I would introduce the secondary air just below the baffle. Cheers, Chris 👍

[@drdr76]

Very cool. I want to build this for my 300 cubic foot camping trailer. would either of the air intake tubes have to be plumbed to the outside? Would it still draw air the way it is suppose to if it is drawing it from the warm air inside the trailer?

[@christopher_barr]

Hi there, thanks for your comment. The intakes could both draw from the internal air of the trailer but to avoid CO being produced you must have an intake vent with the same or larger cross sectional area of the air intakes of the stove. Cold air would be drawn in via this vent, so it might be a good idea to locate the intake for external air as close as possible to the stove, thus avoiding a cold draft causing a nuisance. As always with any open flame device being used in an enclosed space, you should always have a working CO detector in there with you. Good luck with your build! Cheers, Chris 👍

[@drdr76]

I was thinking of using ceramic tile instead of thin sheet of metal on the side and back to insulate it. Would that work better or just as well? There is plenty of cheap ceramic tile at the local Habitat store.

[@Maggie-Gardener-Maker]

I looked at the stove for sale that you link in description area of this video. I don't see that stove being the same as the one you show in video because I don't see where it has the secondary burn feature that your stove has.

[@yes-ib9tm]

Chris, great ingenuity! How about adding gravity feed feature to the MkIII?

[@christopher_barr]

Hi there, thanks you for your comment. This is a great idea and is something I've been thinking about for a while already. I am looking at finding a way for the Mk III to burn gravity fed wood pellets. It would also be possible to have a gravity feed option for sticks and I'm trying to find an easy way of integrating both options so that you can switch between the two.... Cheers, Chris 👍

[@timothydube3046]

While watching this video, I also had the idea to introduce a mechanical(non-electrical) perhaps spring assisted pellet feed to drop pellets slowly into the rocket feed tube. That way I can set it to run continuously throughout the day or night while I am sleeping and not have to feed it continuously or have the fire die and the house go cold ( which is a big drawback of rocket stoves, especially if the rocket stove isnt heating up a thermal mass to save all that heat produced ). I will start thinking up a design and I look forward to seeing yours when you unveil it.

[@christopher_barr]

The Mk III will have a gravity feed pellet option. I have some ideas on how to achive this and will be working through designs as and when I can. Cheers, Chris 👍

[@yvonneballard-FullRecallNDE]

Suggest bigger window please, do you sell them thank you

[@phillipelkins6612]

Hi Chris, Are you any closer to getting the MK3 made yet?, and what size diameter flue did you use? (i bought some rope from a stove shop and the women there said i should not have a flue less than 4 inch or the thing might blow up!) seems a bit much, your thoughts would be greatly appreciated. Best Phil.

[@christopher_barr]

Hi Phil, I'm working on the Mk III but life is crazy busy at the moment! The initial flue section on this stove is 2.5 inches. Above this I have used 3 inch flexible piping as a flue, which worked really well, as well as 4 inch flue sections which also work really well. The smallest flue you generally come across is 4 inches but that doesn't mean your stove will blow up if you use a smaller flue :-D Cheers, Chris 👍

[@nicholassutcliffe3994]

Would love to see Mk III video. Did you make it yet?

[@coryf9650]

Will any size Galvanized water pipe work for the second air intake? One last question, how much is the total cost if you buy everything?

[@johnelwoodsinejr.789]

Also another idea...if you could get sheets of stainless or titanium 9,10 ft long and possibly 0.03 thick .(or whatever is the appropiate thickness.) You could use pipe clamps for the form to hold its shape like the comercial camp stoves that you can buy. That would be impressive as ever. I think over there you would say brilliant as the expression goes. I know that solution has never been figured out by folks on the streets yet.

[@williammaisey2918]

What is the insulation again?. Fiber glass? Or is asbestos involved ? Have you any info on fiber glass break down and breathing it in? Where does one get the rope rape you described ...I'm not familiar with that. Thanks again..it is great to learn new things..useful things..Bill

[@christopher_barr]

Hi Bill, thank you for your comment. I used Rockwool insulation. The insulation has withstood the heat very well but in all honesty I hate breathing in any kind of dust whatsoever so I would always advise anyone to avoid breathing in fibres or dust from insulation like this. Stove rope can be bought online or from any wood burner supply store - it's pretty cheap too. It is made from glass fibres so the same applies to breathing in fibres from this. Cheers, Chris 👍

[@cusitoloco]

Hi, nice stove. You said you are not using a glass, so what material is it?

[@christopher_barr]

Hi Tony, it's mica. You can find out more about this stove on my website. Cheers, Chris

[@MrLongshot762]

Flip the can over and have the lid as a way to dump ash and the bottom will be a good cook surface

[@lancerudy9934]

Very 👍

[@simonsimpson4695]

I'm going with Marsh Rat's design but had a notion to test, incorporating your pipe idea to supply fresh air from outside the van. Thus a draft won't be needed as the air for the combustion will come from outside. Thought I'd post this in case you are still monitoring this video.

[@markisLem]

Think this would work on a sailboat, maybe mounted to a bulk head (with proper spacing and heat shielding)?

[@christopher_barr]

Yep! I plan on doing this myself one day. Very handy to be able to make hot water for showers from firewood you can scavenge from pretty much any anchorage. This is the reason I started building these stoves... Cheers, Chris 👍

[@brmelectric]

hi chris. Enjoyed your video. as i told you i am 1/2 way through building mine. just curious, you mention another prototype were you used copper pipe for secondary burn pipe, which you said you are going back to. is this a continuous piece of flex copper pipe. or soldered. just woundering if soldered joints would hold out. cheers Bri.

[@christopher_barr]

+Brian Moore Hi Brian, that was a single piece of 15 mm copper pipe, bent with a pipe bender. I hammered the end flat to form a stop end and drilled holes in the area where I wanted to introduce secondary air in a manner similar to this version. I liked the copper secondary air pipe because it was simple, lightweight and the heat transfer rate in copper is incredible. If you wanted to avoid bending the pipe (you can bend copper without deformation using sand or frozen water if you don't have a pipe bender) you could use compression fittings as these provide a good seal without using solder. Good luck with your build! Cheers, Chris

[@brmelectric]

Well I like that idea betta. I can rent the bender. I will be doing a video when im done. I ordered the Mica glass from the link you provided for me. I laid it on my wood stove in garage when it was on and although gets very hot, seems to do the job very well.

[@brmelectric]

Oh Merry Christmas to all.

[@christopher_barr]

+Brian Moore Good stuff, I'll look forward to seeing your stove when it's finished.

[@christopher_barr]

+Brian Moore Merry Christmas! 👍

[@sailman9454]

How are you going to feed sticks through a 90 degree bend?