How To Make A Concrete And Perlite Rocket Stove

In this video I re-make my DIY concrete rocket stove with the addition of perlite. Many of the improvements to the stove design were suggested via viewer comments. It's hotter and lighter and will burn cleaner.
Please consider supporting my Rocket Stove Kickstarter: www.kickstarter.com/projects/...
The perlite adds insulation to the concrete body of the rocket stove, reducing the thermal mass. This makes the stove much more efficient and it should boil water, my primary use for the it, more quickly. An added benefit of using the perlite will be the reduction of the weight of the stove.
Next week I'll be adding a J-tube to the stove, bringing the design closer to the a true rocket stove. Then I'll test the stove's performance with and without the J-tube.
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Check out this video where Jimmy Diresta helps Greg finish the first Twisted Sharpie: • Twisted Sharpie - Fini...
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[@Vorpal_Wit]

I have an idea for an improvement. Instead of the rebar, get three long bolts, stick about 4-6 nuts on each of them. You can use the bolts through the bottom of the bucket to hold the nuts in place, which will get cast into the top of the stove. After casting, you can remove the bolts to take the stove out of the form and put them back into the nuts. You now have a rocket stove with an height-adjustable and levelable cooking surface.

[@mgsiddle]

You would only be able adjust the height by no more than 1/2 the depth of the nut or the nut will just drop off!

[@AJPemberton]

@@mgsiddle that's why you use a stack of nuts. Another option would be to put a small tube below the nut, to allow the bolt to drop down into it.

[@mgsiddle]

@@AJPemberton I think you are missing the point. No matter how many nuts you use you can’t change the length of the bolts. Winding the nuts up and down the bolts won’t adjust the height. What would work would be to fix several nuts into the concrete, for each bolt. Then you could wind the bolts up and down into the base of the rocket stove. Then again I think we are talking about the same thing but I misunderstood what you meant which is a great idea! Lol.

[@vincentcleaver1925]

I think the idea is the nuts are cast into the concrete and there's a void where bolt is screwed down. You back the bolts out, remove the form and screw the bolts back into the nuts in the concrete. Grease the threads up, though, so the cement doesn't bond to your bolts in that void below the nut

[@MrIslandman59]

What do you think about this brick rocket stove innovation with auto fuel feeder? kzbin.info/www/bejne/rJDEmX-miM6GldE

[@finefinefineverygood]

I've watched almost hundreds of rocket stove videos. Thank you for being a good and thoughtful teacher. I am especially impressed that you actually listen to your viewers and incorporate their suggestions into your projects which only helps EVERYONE you are trying to reach. I am absolutely going to follow you, and I appreciate what you are doing and how you are doing it. Kudos.

[@finefinefineverygood]

P.s. did you ever add the j stove ? Can't find video and really want to.

[@GreenShortzDIY]

I didn’t. But, I’ll make that video. Thank you for watching.

[@ianbell9346]

Ditto

[@MrIslandman59]

What do you think about this brick rocket stove innovation with auto fuel feeder? kzbin.info/www/bejne/rJDEmX-miM6GldE

[@nicholaspiscitelli2192]

Never heard of a rocket stove until today. Saw a couple of videos today and can’t say how much I love the idea.i also love the comments that folks wrote down. You did a great job of explaining what and why you did everything. Thank you very much .

[@GreenShortzDIY]

Thanks for the feedback, Nicholas. Thanks for watching.

[@michaelhunt5487]

Reredrer ewwewww I

[@MrIslandman59]

What do you think about this brick rocket stove innovation with auto fuel feeder? kzbin.info/www/bejne/rJDEmX-miM6GldE

[@ipshitabhagat8668]

Instead of rebars you can use muffin pan as mold and make three little legs for holding pan. It's safe for usage purposes instead of iron rods popping out. Excellent job done. God bless you.

[@DarkMoonDroid]

This is what the Internet is really for. Learning together. Thank you, Sir, for taking in the crowd-info and using it to improve and giving it back to us.

[@GreenShortzDIY]

You're welcome Jennifer...thanks for watching.

[@adelacruz4958]

Ok me gustó. muchísimo gracias pity videos

[@larrytoporek4666]

That's right Jennifer, our pal Al Gore invented the internet for the sole purpose of community service and learning. Well said. 👍

[@tcc187620]

These video's are a must see for the homeless. I can and will modify this stove to also be used as a Boiler Unit for a Heat Transfer into Tents. Hold my Bong and Watch THIS !

[@randywilson6869]

Larry Toporek I think u have names wrong. Maybe ross

[@anaaskar9016]

Useful, clear, fun to watch! Learning from suggestions? Wonderful! I also love the natural way you involve your son in building, creating something useful, a compost bin!! Lovely parenting! Thank you for sharing!

[@MrIslandman59]

What do you think about this brick rocket stove innovation with auto fuel feeder? kzbin.info/www/bejne/rJDEmX-miM6GldE

[@thereseserbo4834]

Your video popped up after watching a similar video, never heard of such a stove, thank you for sharing and I appreciated how you used other viewers ideas to improve your design and showing us while doing so. Thank you...

[@GreenShortzDIY]

You're welcome Therese. Thank you for the encouragement. Thanks for watching.

[@MrIslandman59]

What do you think about this brick rocket stove innovation with auto fuel feeder? kzbin.info/www/bejne/rJDEmX-miM6GldE

[@danielb913]

I like the way you took the comments as constructive criticism rather than attacks like many would. Makes you seem like a fun and great man.

[@TZi20]

This is a great channel. My dad would love to watch this channel.

[@Banjo-lm2wl]

Love your stove I did one years ago and it came out just fine. My next on4e will be the same as your design thank youi for your video`s i love watching them from Australia. god bless

[@EstanciaTimesDocumentary]

So it works..

[@mm-kl2sn]

@@EstanciaTimesDocumentary ََليالذاااااااتنيلشسسلكنير

[@jodyjohnsen]

Nice! I like the improvements. Can’t wait to see the weight/heat improvements. Also, really appreciate your generous appreciation of some not-so-polite suggestions.

[@LogginInn]

Fantastic video. Thank you so much for making it. I'm making one as soon as the snow is gone.

[@GreenShortzDIY]

Thanks for the encouragement. And thanks for watching.

[@rodneyjackson622]

Wow! this is the best rocket stove design that I ever have seen, great job, love the design plan you made, if ok, I like to make one for myself, because you made it so simple. Thank you for sharing. I really enjoy watching your video.

[@GreenShortzDIY]

Thanks Rodney. Of course you can make one. Let me know how it goes. Merry Christmas. Thanks for watching.

[@MrIslandman59]

What do you think about this brick rocket stove innovation with auto fuel feeder? kzbin.info/www/bejne/rJDEmX-miM6GldE

[@cathypickren655]

I gotta say - you're a humble guy. So MUCH correction. I have learned a ton - i love your can-do attitude. I can't help but wonder if those who have offered so MUCH advice, have actually done this project? I will. Im so doing this.

[@BunzSudz]

Great job! It looks so nice. I've got to make one now. Thanks so much!

[@GreenShortzDIY]

Thanks for watching Alacia. Good luck with your rocket stove build.

[@daveunderwood6498]

You're doing an excellent job!

[@debmcgowan100]

Im going to make one this summer. TY for making the video easy to understand. This is a great public service you're awesome for doing so.😊

[@GreenShortzDIY]

Thanks for watching Deb. Good luck with your build. :-)

[@uncledoug9999]

Wow! You really rock. The improvements you made are great. What a wonderful design for a durable and efficient stove. The milk jug and PVC taped up with cardboard seems like a brilliant solution for the average builder. The next step according to Dr. Winiarski, is creating a skirt to surround the pot, and improve heat transfer.

[@martinciccia4615]

For your next cement/concrete project, when you're done and take the forms or cardboard off, spray your project with water or pour on for a few days. That will help make it stronger by prolonging the drying up process among other reasons. Nice job nonetheless, I'm going to build one for myself!

[@josephbnd974]

Slower drying = slower shrinkage = less likelihood of cracks

[@garrettgood5277]

Longer cure = stronger product :)

[@cheffsolo7739]

Great video , and thanks for your time in making this video , and to show all those troll's out there that everything people make is not always perfect , but thank you sir . And keep doing what you do don't worry about troll's comments.

[@GreenShortzDIY]

Thank you for the good words, Solo. I appreciate it. Ever notice how most of the trolls here on KZbin don;t make videos, they just criticize those who are. :-) Thanks for watching.

[@randybennett204]

I really enjoyed watching your video! Never stop -- you are very entertaining and informative! 👍

[@infradig696]

This is the most clever Marco's ad I've ever seen in my life. I ordered 3!

[@KaMandroid]

Thank You! A simple build with simple tools and simple explanation. I appreciate your hard work in making it simple!

[@GreenShortzDIY]

Thanks Keith. Sometimes I start out more complicated and then try to remove complexity. About half the time a make a video after the initial build. The other half, I got out there with the over built prototype. :-) Thanks for watching.

[@jocap7993]

Old wood cook stoves I've seen use an ash pan. That way you just pull the pan an use them in your garden or they are great for putting on icy places you walk or drive. Thanks for sharing.

[@kelleynoiseux5940]

Thanks for letting me learn how to make the rocket stove. Can't wait to see you show us the 45°angle self feeder...

[@MrIslandman59]

What do you think about this brick rocket stove innovation with auto fuel feeder? kzbin.info/www/bejne/rJDEmX-miM6GldE

[@RiseOfTheNew]

Great video man. I love the rocket stove. Definitely gonna have to make one my self

[@JB-um5yo]

I love this...but a helpful hint from a former concrete contractor...curing doesn't require protection from moisture (i.e. trash can lid) but protection from drying too quickly, so actually the lid is keeping the sunlight away while you allow it to cure...excellent move.....don't be afraid to grab the garden hose and soak it daily for a few days or even weeks for a stronger oven ....i hope to follow your video and make my rocket stove that i can have on my semi ...thanks for the awesome vid .. a trucker from Wisconsin

[@GreenShortzDIY]

Thanks JB. I had heard the benefits of having moisture for the curing process, but not the effects of sunlight. Thanks for the info. And thanks to all you truckers for keeping our nation moving. And dealing with all the crazy 4-wheelers out there. :-)

[@bigoldgrizzly]

Easier still, wrap and seal up the whole thing in a polythene trash bag and leave in a shady place for a month ... must be followed by a long period to dry slowly and thoroughly .... think 4 to 6 weeks. [makes an ideal winter project to be ready for next spring] The mix used was, to my mind, too wet. it should have the minimum water needed to make it workable, with more time spent tamping down. Water / Cement ratio is absolutely key to achieving good concrete strength and too much water is the commonest failing in DIY projects

[@valdimirputin1335]

Don't you realise stoves made with cement concrete will burst like bombs when the fire temperature reaches a certain point? I've faced this. Is there any tips?

[@MrIslandman59]

What do you think about this brick rocket stove innovation with auto fuel feeder? kzbin.info/www/bejne/rJDEmX-miM6GldE

[@MidwestManMountain]

I'm impressed by how many comments you used as feedback for this video. Good picks :)

[@GreenShortzDIY]

Thank you. I had a couple of years of comments to sift through for this. Lots of snarky ones too. 😎 Thanks for watching.

[@NateG007]

yes...good job engaging with your viewers. hear hear

[@pabitramohangayan1482]

Woo.. excellent job. I got to know many things and I will soon make one for myself. Thanks sir.

[@beatlesadeye4912]

Great ideas and research. Excellent work. I will build one seeing yours. Thank you.

[@tinasearcy4684]

I've seen a lot of rocket stoves and like yours best thank you for a great job can't wait to see your next one you make.

[@juanitoaragon8046]

You a good illustration, a simple supporting materials you showed and i can easily follow how to make a stove like that, thank you

[@abusiddikmolla4694]

@@juanitoaragon8046 L🙏ll

[@abusiddikmolla4694]

@@juanitoaragon8046 Ll 🙏 L

[@abusiddikmolla4694]

@@juanitoaragon8046 o

[@abusiddikmolla4694]

@@juanitoaragon8046 🙏l L

[@titopedrosumayod2433]

Your procedure of making it is very easy that everyone can do and its very nice and helpful. But i see a little adjustment if i make my own. I will bend the extending steel 2"-3" to have a good hold of the pans or cooking bowls.

[@Lowkey_ID]

Or weld an old bbq crate to the top of the rebar.

[@allendeanhuscusson459]

I’m so grateful for you doing this , all the addition can be a progressional process

[@GreenShortzDIY]

Thank you for watching, Allen. And for the encouragement.

[@RecipesOfHope]

That is super cool. We at Recipes of Hope are always looking for ways to both cook food and warm up the Homeless here in Canada. Thanks always for great ideas. -Canokie Dave

[@BulletproofPastor]

Great build! IDEA: To add secondary air and raise cooking height make another section the same way to sit over the first. It will increase draft and you can direct the air intake to vortex in the flue. Use the rebar to align and link the two sections. You may have to improve the base for stability but cooking height should be very comfortable while increasing burn temperature and efficiency.

[@GreenShortzDIY]

Good ideas, Tyler. Thank you for sharing. Thanks for watching.

[@dr123hall]

Yes! Vortex solution and simply add rebar “feet” for stability, all the way across for less side stress. Ash slide out pan works perfectly with that addition!

[@HealthSupercharger]

To improve this stove I recommend a 5" diameter vertical pipe instead of 4" which believe it or not gives 56% more cross sectional area in the pipe and 56% more power. 5" pipe would be 5.5" outer diameter and will give you 2.25" thick wall on the top of the rocket stove because the bucket is 10 inches diameter at the bottom. Then instead of milk Jug use 2x6 lumber which is 5.5 inches wide which is perfect for a 5" pipe, or if you don't have 5 inch pipe wrap a 4 inch pipe in few layers of cardboard to achieve 5 5 inches. The base of a bucket where the fire will be needs to be fatter. Bucket is 12 inch wide there so the chamber should be ideally 6 or 7 inches in diameter. To maximize the flow of air and to allow room for fire wood. I would ideally recommend to stack 3 pieces of 2x6. You can even screw this to your pipe. 4 inch pipe is very limited. I find that 5 inch is the minimum if you want to boil mid size pots of food. Mid size as in 1 to 2 gallon size pots. Ideally I like rocket stove from 6 inch pipe which I did made in a rectangular small recycling bin. My 8 inch pipe made from full size recycling bin works the best and is actually 9 inch diameter because the 8 inch pipe has half in holes. For this project if you want to cook pots of food and really use this stove I recommend you find a large diameter extra large bucket of small garbage bin and you use a 6 inch pipe or you can use empty paint cans which are 6.5 inches in diameter and free often. Perfect for 8 liter pots.

[@colinlawrence2186]

Thank you for sharing this with us it's a great idea to get away from traditional metal products God bless keep the videos coming 🙋‍♂️🇬🇧

[@martinalavegarcia8083]

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[@robertopizano6436]

You did a great job, thank for sharing you video.Greetings from Florida. Roberto Pizano

[@ivettecolon4562]

Thanks you so much for taking the time showing us something new.

[@GreenShortzDIY]

Thank you Ivette. I'm not sure how "new" this idea is, but I like to think I added a new twist or two. Thanks for watching.

[@johnpaitaki6122]

To much water kills cement strength. try wet cure for 7-28 days. chicken wire is a good idea and multiple layers would be good. try 1:2:3 cement/sand/perlite. you could also try vermiculite (expanded rock). rebar bent in circles would also help prevent the vertical crack. Over all, nice. Your a good teacher

[@alnajmi]

great work. just a suggestion to add more strength to the concrete after drying. water the whole stove twice a day for the next 3 or 5 days. if it rains, let it rain. trust me, that will prolong life and prevent cracks. this is a proven practice in the area Saudi Arabia where i live. thanks again for sharing. i may do this for my desert camping😃

[@xysix2548]

True. But, you could simply immerse the whole thing in a large water filled drum for about 2 weeks. water will cure even more effectively under water. Here in the U.S.A. where I live concrete bridge construction is always cured under huge tarp-covers that are kept wet. Just as you have pointed out the wet-cure is far more effective in terms of increasing strength and preventing strees cracks from forming.

[@bigoldgrizzly]

@@xysix2548 easier still, just wrap completely in a polythene refuse bag and leave it in a shady corner for a month

[@anthonyanders9797]

Great video. Never knew about a rocket stove unti now. Thanks for a great way to cook outdoors. 😀👍

[@GreenShortzDIY]

Thanks for watching, Anthony. This type of stove is a riff on a real rocket stove, which has some particular design elements not in this design. However, airflow is the most important component of a rocket stove (in my mind) and that’s why I call this concrete stove a rocket.

[@lizatl1]

The rocket stove is a game-changer during hot weather. You can fry fish, chicken, make hamburgers, scramble eggs, bake pies and breads and so much more. I even do some canning on the stove. I have friends who have built rockets to use when their grandchildren visit them. The children take great stories home to share with parents and friends. A friend even told me his grandson did a show and tell in his 4th-grade classroom He took handouts for making brick or cinder block stoves. Although this is the sturdiest and most permanent stove, KZbin is loaded with videos for useful but less permanent stoves.

[@miagulley9078]

Very informative and I will love this project

[@DreamingCatStudio]

I’ve never heard of a rocket stove, but you’re such a good teacher I watched it all. I’ll watch the cob stove video too. Question: could you put the stove and grate up on a concrete stand, so no need to crouch to feed it, and cook? My knees would be happier... 😊

[@GreenShortzDIY]

Thank you for watching. Yes the stove can be elevated. That’s not a bad idea. My knees aren’t young anymore either. :-) it would need to be a pretty beefy stand, to handle the weight. Perhaps similar to the table built for the cob oven, with an insulated layer of sand. Thanks for the feedback.

[@sixmagpies]

Use a top loading batch box with an 'adapter' vertical in the lid so you can also feed it with sticks.

[@thomaswalz3515]

DreamingCatStudio You are in for a fantastic journey... three years ago I built a free standing rocket with a 55 gallon barrel for heat... incredibly efficient. Also look into rocket-mass-heater... big fun.

[@efuller6770]

check out a site called permies. I learned all about rocket stoves and rocket mass heaters there, I hope to build something this year

[@BBQCrasher]

DreamingCatStudio awesome awesome awesome tku for the remake

[@robpayne1345]

Some suggestions for outside texture and beauty. Peel the inner layer of the cardboard to create a corrugated texture. Or, cut out different shapes such as leaf designs, mountains or geometric squares, rectangles, and triangles and apply then to the inside layer of cardboard using glue or tape. Gluing leaves onto the cardboard prior to inserting the cardboard works as well. When peeled, just like the texture created from the lines when rolling up the cardboard, these impressions will be a part of the exterior. Once when I was finishing a slab on a windy day, as leaves blew over the concrete surface I got tired of picking them out leaving some behind. When I was finished, I wished I had left more of them in because of the accidental beauty added. After staining the concrete, the leaf impressions really added beauty. On another note, left alone, concrete will cure 95% in 28 days. I could imagine with adding heat when firing up the stove could help speed up this cure time as well. Allowing the concrete to cure longer than five days as suggested in the video will result in less cracking for years ahead.

[@guzziventure1750]

Very nice your way of presenting. Including the remarks/tips of others.

[@doctorfairlight2792]

A milk jug of rainwater. Señor Chadwick must have trolled. Please, please, please, may that be true. Superbly handled Mr. Greenshortz.

[@terrancecoard388]

I like your style !! Appreciate the feedbacks from your viewers and how you incorporate them. Fantastic distraction from watching political videos!! Keep up the great work.

[@rodnussbaumer2398]

Great video quality and well executed build. I suggest using longer rebar that is bent toward the center of the top to increase the support area and allow the use of smaller cooking vessels Also, provide some means to fasten a sheet metal curtain above the rim of the stove. Users of small backpacking style stoves can attest to the vastly improved efficiency afforded by those

[@josedelossantos2428]

Awesome very creative like your rocket stove concrete will last for millions of years.

[@Indian19476]

Great work. Lots of appreciation....from India

[@mikechristensen3300]

Perlite and portland makes for a strong, light, and insulating concrete that i used to line the chimney in my house. I tested it with a oxy acetylene torch and hammer ....that was 5 yrs. ago and no cracks or debris in chimney since!

[@GreenShortzDIY]

Mike, thanks for the info from your experience. I’m glad to know the cement and perlite mixture does so well. Thanks for watching.

[@adrianekelly2966]

In what proportions?

[@michaelwmonaghan9420]

Mike Christensen 🇨🇩green shorts Diyarbakir

[@truckerenoch8824]

I actually like the idea of cardboard mold release. It will hold moisture up against the stove, to keep it from drying too fast. It may be a good part of why it's held up so well and avoided cracking.

[@beckyspindler2153]

I am so glad I found you . I have enjoyed watching your second build on this little stove . I myself was thinking about no stick spray from the kitchen. I look forward to more videos. Thanks for sharing

[@meldacano1525]

Great information. I'm going to make one for myself. I love to cook outside. I'm a new subscriber. Again. Thank you!

[@GreenShortzDIY]

Thank you for watching Melda. Make sure you check out my fire brick rocket stove video. It is very easy to build and works great. My new favorite rocket stove.

[@motolifealways]

Awesome content friend!! I love what you did and i need to replicate for myself! One suggestion, id continue with the threaded studs so you can use a coupling to adjust the level difference when not on perfect ground. Either way this is an amazing rocket stove! Thank you

[@trevormann8221]

Yeah, my thoughts exactly

[@farmerbobsgarden5554]

you just like to build stuff , don't you? I like it !

[@GreenShortzDIY]

Guilty as charged. :-) I think you’ve figured me out. Thanks for watching.

[@davidsimmonds603]

dude, I like your attention to detail. I agree with Jennifer Grove. This is what the internet is and should be used for.... learning.. well done..

[@GreenShortzDIY]

Thanks David. I do appreciate the great comments, suggestions and ideas. Thanks for watching.

[@ortizle1]

At first I had no idea what was a rocket stove ..I thought of something blowing up! Ha ha ha I was intrigued. You explained everything in detail. Loved that you also displayed viewer comments and applied the best practices to your work. I enjoyed the video not only on your efficiency on explaining everything but you did the trial and error work already for us. Great job. Thank you. Loved it.

[@GreenShortzDIY]

Thank you for all the comments and encouragement. Merci.

[@MrIslandman59]

What do you think about this brick rocket stove innovation with auto fuel feeder? kzbin.info/www/bejne/rJDEmX-miM6GldE

[@SapioiT]

You could add a few holes, angled clockwise or counterclockwise, to feed the flame about midway to the top, with air, that would help with burning more of the fuel in the flames. You could even have the holes lead to a slightly larger chamber, where the fire can be mixed with air. The angled air sources will help rotate the airflow inside, to have the added air be uniformly mixed in the fire, to burn off more of the fuel that would end up as smoke.

[@GreenShortzDIY]

Thanks for the suggestion and the proper location of the holes. I may add some using my hammer drill. I want to test this a bit as is, before making this modification. Thanks for watching.

[@safetyfirstintexas]

Offset air feed vs main riser tube accomplishes the same effect.

[@SapioiT]

Also, one could use some fins or "waves" in the cast, to accomplish tiny (fire) tornadoes, which help burn more of the fuel.

[@uncledoug9999]

Great video, Thank you for your hard work. The extra air is important. however, it needs to be preheated. Best to add it from below and behind the burning tips of the wood sticks; as in "Winiarski Rocket Stove". I think the cold air will not work for the super hot combustion you speak of.

[@SapioiT]

I'm not sure about that, since it can be heated quickly, once it mixes in with the flames. Sure, it might be better to preheat it, but it's not necessary. Even more so if not much heat is lost to a termal mass (like cob/mud/dirt).

[@elizabethharttley4073]

I am inspired. Please wear a mask when pouring and mixing dry concrete just a bit of that dust inhaled is wicked. I use vegetable oil for my mold releaser. I make papercrete planters. Thank you for these videos, you are a good host. So receptive to comments and applying the ideas. Carry on

[@GreenShortzDIY]

Thanks for the encouraging words, Elizabeth. And I hear you on the concrete dust warning. I’ll remember my mask next time. :-) Thanks for watching.

[@mrtechnophile3483]

A half-mask respirator ($20-ish) actually seals to your face and saves you from exposure to silica dust, which causes scar tissue in the lungs. Look up "silicosis". Scar tissue doesn't work well for breathing.

[@Marli2023]

Do you have a video for making those planters? I would like to see how thats done.

[@lynnroberts3742]

I've been watching a professional concrete installer on you tube, he coats his forms with motor oil. Probably less expensive than a mold release product.

[@sgtbilkothe3rd]

Teflon gloves when using a box cutter and the grinder wheel would be a good idea. Thanks for the video, I might try making a rocket stove..

[@gmeisner1713]

Looks great, good job, thank you for sharing

[@hermannvalsson4237]

Thank you for your great video, Hermann from Iceland.

[@dilldowschwagginz2674]

Great video! I noticed that the tool you refer to as a "spade bit" is called a 'paddle bit" in my part of the country. I'm always intrigued by little differences in dialect like that

[@tombryans3378]

I built one of these today. I'll see how it comes out. I actually made a copper pipe coil round the pvc pipe with an inlet and outlet for heating water :)

[@bigermie1]

maybe to funnels end to end to make a venturi

[@KarlsLabReport]

Great idea!!!!!

[@TRod4297]

Small bag of fibers for concrete will add tons of strength and reduce weight as well. Thank you for showing good detail. The hammer taping works really well too.

[@sulberta.orcullothesingerm1680]

Thanks for your idea and demonstration..Surely i will do it when i will make my own home sooner.Salamat po

[@brianvaughan3553]

Just a thought... Instead of rebar, maybe drop in anchors... That way you can use different sized bolts to adjust the height

[@david_cummings]

No. You'dd have to rotohammer, drive in and set those anchors. You'd split the wall on at least one place. Cast the rod in

[@RustyCas999]

David Cummings No, would actually work very well. You just bolt the anchors to the form (bucket), using a flat washer on the inside and a short bolt. This is a great idea!

[@michaelbaldwin6543]

I used 2" lag bolts and nuts all the way down the screw. Placed one nut on then slid it through the hole in the bottom of the bucket. Next I threaded nuts on until the end of the screw. Poured the concrete over the assembly and this created an adjustable height pot stand. Not "green" like using old rebar, but very effective.

[@theresaburatynski2988]

Nice design, thanks for sharing. Consider adding a double layer of bricks at your base to make ash remover easier and give more space for hot embers to increase your heat duration without refueling. Another thought...the tripod top/ rebar restricts the minimum diameter of your pot. Maybe using a small raised grate partially embedded in the concrete?

[@nimrod275]

Cool info, I’ve seen old gas oven grates used as well.

[@rickrivera7245]

I absolutely love this. As for any improvements, maybe a handle like on the buckets for easier transport. We should be neighbors, you do some cool things. I'm making 3 of these for our back yard cookouts. Thanks for sharing this project video. Rick Rivera in Stockton CA

[@johnstockman3543]

Great stove,very practical and very efficient.

[@mistamischief1979]

Love the projects brother. Being a concrete forman for many years...may i suggest any form of cooking oil on the interior of your bucket. Normally when we pour walls or columns, we just spray everything down with cooking oil for easy release/removal of the finished product. I would love to see how the oil would work in that type situation. Keep up the great work. 4 thumbs up!

[@GreenShortzDIY]

Thank you my brother from another mutha. I love getting info from the pros. Thanks for the oil idea. I am definitely going to get rid of the card board form work in the next rocket stove build. Thanks for the feedback and the encouraging words.

[@tonyhussey3610]

I was thinking mold release wax for composite molds but oil is a much better idea. Thanks

[@deepakthadhani]

Used motor oil works great as well, I use it to release concrete from molds ( I make gardening pots in plastic pails)

[@bradmaas6875]

@@deepakthadhani non-edible plants I hope, many contaminates in used oil I wouldn't want to ingest.

[@abuyusra9916]

M Via Mr know all, if you knew everything then what are you doing on YT? Stop putting other tradesmen down. If he described it as “cooking oil” at least it will be easier for laymen to understand rather using technical jargons.

[@-robo-]

You could use rebar in the shape of a squared U. This give you standoffs for your pot, AND handles to Cary the stove with.

[@GreenShortzDIY]

Another good idea, Robert. I may have to try that. Thanks for the feedback.

[@dr.rohindralall4129]

Awesome, best U Tube video I have seen so far.

[@twillamacauley8203]

Thank you for this video .Its very educative for me as i use it off grid

[@GreenShortzDIY]

You are welcome, Twilla. Thanks for watching. Good luck with your off-grid adventure.

[@voxelmaniam]

Great video! FYI the standard cure period for maximum strength concrete is 28 days. Although it continues to harden forever it achieves the majority its strength in 28 days. Also, keeping the concrete moist during the curing period is a good thing. Curing is a chemical process that involves the growth of crystalline structures that is aided by moisture.

[@johnr.johnston5808]

Does not harden forever. Begins to rot after several decades.

[@Rick_Sanchez_C137_]

Concrete gains 90% of its cure in first 28 days, the remaining 10% in next few years/decades (depending on mixture, climate, thickness, etc.). en.wikipedia.org/wiki/Concrete The only mixture that continues to cure indefinitely is perfectly manufactured Limecrete (and that stuff hasn’t been made the right way since the fall of the Western Roman Empire). Notice there are ruins left from Rome, but the building blocks are often still whole and just disassembled/toppled creating the “ruin.” The Romans Hydrated the Lyme for up to five years with daily stirring, then mixing with volcanic ash to make their structures.

[@valdimirputin1335]

Don't you realise stoves made with cement concrete will burst like bombs when the fire temperature reaches a certain point? I've faced this. Is there any tips?

[@brucelipnickas3968]

I have a house that used to be a stagecoach weigh station, took down the chimney and kept the clay-fire bricks, also have 4" x4' ceramic tube used to connect stove to chimney, wondering if there is a way to incorporate the materials into a rocket stove?

[@GreenShortzDIY]

Yes! If the ceramic tube can be cut, slice it at a 45 degree angle at 12 inches, leaving a 3 foot riser. Cement those pieces into an “L” with refractory cement or go organic with mud. Then use your bricks to build a surround around the “L,” leaving a 3 to 4 inch air gap to be filled with a similar concrete/sand/perlite mix or try a clay/sawdust mixture. That’s just a idea off the top of my head and there are likely multiple variations using the materials you’ve got. Have fun. Let me know what you build. Thanks for watching.

[@chrisw5742]

Flue tile is the name of it. I build chimneys. And YES that is what you want to use. Also use refractory cement. Or yellow fire brick.

[@sandramaher4243]

You are amazing….. Thank you for sharing your marvellous Skills! 👏🌹👏🌹👏

[@angelflores7551]

This stove look like very useful. Congratulations

[@hulagirl9315]

try making one with Air Crere (soapy foam cement mix)... super light, super strong and self insulating

[@hulagirl9315]

great video

[@GreenShortzDIY]

Thanks for the suggestion. And thanks for watching.

[@busdrummer]

Yes- shampoo works way better than soap . Fyi

[@QuiChiYang2]

Use a Chinese wok with this rocket stove. Perfect. Thanks, I'm making 1 of these.

[@GreenShortzDIY]

Excellent. Good luck with your rocket stove build. Thanks for watching.

[@haryanvibaman6182]

We dont need anything from you(China). Thanks for giving Virus to the whole world.

[@RestingBitchface7]

So, I made one of these finally, but used waxed butcher's paper instead of pizza boxes for liners. Thank you for the great tutorial!

[@jafarmohammed5330]

Awesome Idea...really appreciate your innovative method...Thanks lot...

[@54otor]

Awesome vid Just so you know that is not a grinding wheel, its a cutoff wheel and could blow apart if used incorrectly

[@GreenShortzDIY]

You are correct. I was not using the right tool for the job. Thanks for the feedback. Thanks for watching.

[@josephbrown9610]

God yes! So dangerous. I had a cut off wheel blow apart on me a few years back. So glad I am a stickler for proper PPE!

[@randybennett204]

I'm glad you told him -- I would not want him to get hurt! If he keeps using a cutoff for a grinder-- he will.

[@muthukandan3818]

@@GreenShortzDIY 4அஆ7அஅ444

[@jaydenstevens6782]

54otor Okus quiet

[@patrickswain47]

Your videos are awesome! Have you considered doing a video on a pool/hot tub/off grid hot water rocket stove heater type of design? I'm looking to add copper pipe inside of your design to create a thermal siphon to pull cold water from the pool without electricity. Was hoping you might have something in the works.

[@GreenShortzDIY]

Thanks Patrick. I have thought about a similar idea...to heat water for an outdoor shower application, with water under house pressure or gravity-fed rain water. I'd be interested to see how your thermal siphon worked. You might consider a double height (two bucket tall) set up, with proper stabilization. Don't want that falling over. Or perhaps a rocket mass heater with an internal coil in the riser. I think as long as you had water in the copper it wouldn't melt (1984 degree F melting point). I like the exposed copper in the chimney versus embedding in the concrete. Easier to observe, maintain and switch out. I say go for it. Experiment. Let me know how it goes. Thanks for watching.

[@WKYanks]

Great vid! Thanks for sharing. I might suggest quickcrete. Also, I love the open bottom for the fire, it allows you to use bigger wood to fire it up.

[@ibrahimbasar8122]

Thanks for this great job.

[@jeffcampbell6898]

I use a Cement called "Refractory Cement", mixed with crushed brick for insulation.

[@GreenShortzDIY]

Thanks for the suggestion, Jeff. I need to order some refractory cement. I’ve also been practicing making aircrete. Still have a little more tweaking to get it right. Thanks for watching.

[@iainohalloran42]

Perlite or vermiculite is the best insulation around you could use powered clay to the mix as well and instead of just rain water you can make water glass 🧐 or is it glass water anyway it’s a high temp refractory adhesive. Great video bruv keep the videos coming please thank you.

[@peterlockhart2588]

I have some ideas to improve this design. How about having it up higher so you don't have to squat so much to fuel it and to cook on it. Also I think it should be longer to increase the length by joining 2 buckets and if it is longer it roars - like a rocket. Love your work. Also bend the metal bars 90 degrees so the pot sits easier on it. Cheers. Peter

[@GreenShortzDIY]

Hi Peter. Good feedback. I have made a sand table for all of my stoves. I call it Rocket Stove Row. :-) This particular stove recently got a heat-sink grill (video), a custom firebox (video), a custom stand (video), and a custom ash tray/fuel bridge (video). It has evolved into quite a series. Now I just need to upgrade the stove. :-) Thanks for the feedback. Thanks for watching.

[@josephbnd974]

He's young & flexible...good suggestion tho'

[@maryjanetoledo8215]

What is the mixture of the sand and cement.? Thanx.

[@lizatl1]

We are still using your initial stove but the stove braces are a great advancement. Thanks. Mobile, Alabama

[@GreenShortzDIY]

Excellent. Thanks for letting me know. :-)

[@orlandopammit6216]

Very educational. With that stove will even allow one to utilize small wood twigs and branches and even pieces of papers, cardboards, and charcoals to generate heat energy. And most importantly, the heat energy generated is utilized most efficiently because the heat is CONCENTRATED directly under the bottom of the pan. It is a substantial improvement over the traditional stoves i've ever seen in many Villages across many Countries in South East Asia and Africa. Tnx for sharing.

[@strangetimes3511]

yeah, really easy to confuse, with Greek Architecture ;-) Good Job, Man!

[@curtwarkentin6167]

I actually love the idea of heavy concrete for a heat sink. Once it does get heated up it will continue to radiate heat quite a while after the fire has gone out. That could be handy in a cold winter where I live.

[@valdimirputin1335]

Don't you realise stoves made with cement concrete will burst like bombs when the fire temperature reaches a certain point? I've faced this. Is there any tips?

[@bernardbernard8779]

Thank you for the technique of making the furnace. This method can be used for saving energy oil and electricity. We return to the environment friendly period.

[@aliasid6914]

Absolutely love your videos. A good learning experience. Thanks!

[@GreenShortzDIY]

Thank you, Ali. Thank you for watching.

[@jusb1066]

tip for concrete, dont rush to remove it from bucket and cardboard, in fact , put plastic on top and leave it for weeks, this keeps it wetter longer and cures stronger in the end, does require the patience though, and of course the slow drying out afterwards too

[@GreenShortzDIY]

Ah...patience...why so elusive. :-). Thanks for the suggestions. I will incorporate on the next build. Thanks for watching.

[@caswallonandflur692]

Absolutely ✔ and may I add : get a haircut or grow your whiskers during the long curing interval ! This will discourage most of the triflers and wannabes!! 😆

[@jdowies]

The goal is not for the concrete to "dry" the concrete needs to cure. It can cure underwater, so it doesn't need to dry. Where does the water go if it doesn't evaporate? It doesn't go anywhere. It chemically bonds and stays there in the mass. The water is all still there. If the surface dries before the concrete cures then the surface does not cure properly. It would be better if you removed the trash can lid and let the rain keep it wet or even spray it with the hose for a few days. (That's my 2 cents. Let the flaming begin.)

[@teatonaz]

Ugly Angel < - - No flames,...LOL,... good suggestion. Cheers

[@likelydaily6767]

Adam Sandler goes off-grid. Great video. I want to have a go of this but imbed a copper water coil within the concrete to use as a pool water heater. Reckon that’ll work?

[@joeholtz5395]

Yes!

[@carlosbujaico7281]

Excelente video, muy practico y sencillo. El mejor que vi. Tengo que hacerlo. Saludos.

[@alberttylermccain8614]

Super Cool Brilliant 🙏 Thank you for sharing

[@619sdbdub]

What about using the quart milk jug "form" as the inside chamber. Providing a "venturi" effect????

[@Roel922]

I have a lot of nutshells and I have discovered that they burn realy bright and hot when i did just put them on the glowing coals in my woodstoof. I would like to have a rocket stoof design that works like pelletstoof but instead of using pellets using nutshells which I can feed to the rocketstoof. I want this because I am a hobby moonshiner and want to distill my mesh with it. With a feeding pipe I can just leave it for a while and not have stay with it to put branches in it all the time.

[@agnesnagari]

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[@agnesnagari]

Selamat ga ga ga Ayu ga Si aa TU ga ga AKU LA da ada ada Aa ada faro dalam d