Having a relationship with the land I live on is important to me. I hope to use this channel to share ideas and get feedback from my viewers. I am currently starting a business building rocket stove cores, so I'll probably be putting up some fire focused videos in the near futures.
i also am super confused how youre using fibre board here. its designed as a backer behind firebrick or metal, never as the actual inner lining or structure.wont it just fall apart? chip up? also isnt it toxix when cut or disturbed? (Unless Superwool lining the riser only)
Thanks Luke, for this 'assembling J-rocket' video. My question: Did you make a similar assembling video of the 'batch box rocket stove core' made with the same CFB? I wish to see the batch box material and construction. I'm fine with visualising the CFB pieces for the batch-box (I watched your this 'comparison' video too - ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-8zIrM_EbggI.html)
The J style seems way better to me, it’s not designed to be left burning…a short burn gets the cob up to temp then it’s left to got out. The box style is more contemporary so people aren’t as apprehensive about the sideways burn. Get stuff thanks.
how do you fasten the ceramic fibre board so that it doesn't have gaps? The chimney could have straps that I don't see but how do you keep the board inside the core from falling in? Refractory cement?
Very cool. I'm going to build one of these. I like the Batch box design, but I want to have a permanently installed clear ceramic window on the front of mine and don't want the hassle of trying to make it open as a door. So I'm thinking, why couldn't you just make a batch box design with a large insulated door lid on top and just drop the wood in from the door above then close it 100% sealed. I would make the air intakes the same as the batch box in this video. What do you think, any problems or issues modifying the Batch box design to have an insulated door on top and a non opening window on the front (with an air wash going over the glass)?
if this is really tiny, does that mean it can be utilized on a sailing boat? we need a lightweight functional rocket mass water heater and stove/oven... all in one solution not larger than 20"x20"x30" height... with so much knowledge all around us, why hasnt anyone come up with a clean simple solution that works afloat? there are thousands of sailors waiting guys..... what are you waiting for?
Very good video. Actually burning, good dog content, and easy to understand. I've been researching the heck out of these and your videos are very good.
Ceramic Fibre board is used as a backup most of the time to refractory installations I don't understand what u are trying to accomplish here are u using this to heat an area this is not something u use as a permanent thing I've been installing this stuff mainly for a backup to refractory or to make commercial flues for heat treating ovens after time from the heat they will breakdown and if u get them wet just say goodbye to it it will fall apart 2nd of all after time from being under heat it will breakdown becoming very toxic fibres from what u are using is cancer causing trust me I've been in the refractory installations business for almost 45 yrs this is not something u put in your house or garage just a warning the stuff u are using is Fibre board read the MSDS on this stuff dust particles from cutting this stuff is very hazardous make sure u wear respirator when cutting this stuff
Someone, seemingly very knowledgeable person, warns about the same thing in the permies in a long and very detailed discussion. How about dense mullite brick then?
The discussion on the Permies forum identifies surface treatments to mitigate these issues. In the UK the off the shelf solution is to apply Vitcas Zircon paint to the interior ceramic surfaces of the stove. This is used in commercial kilns. I don't pretend to know enough to say this is necessary but you can use it if you're worried.
(excuse my inglish) Thanks x this! I am building my bbr4. I thought that I did it wrong, but, watching here the tall barreal, the main needs to be that way, and the part of the little barrel, I made it with bricks. And... I have to start the fire veeeery more slowly. I learnd too mouch with you, guys, THANKS🔥👍!!! And SALUDOS from Argentina 🇦🇷
One comment on your glass recommendation. I don’t think you meant tempered glass. Rather than tempered glass for a window on these, , one wants ceramic stove glass. Common brands are neoceram and robax, among others... Plain old tempered glass would shatter at these temps, possibly explosively, and at a temperature where it could ignite any combustibles in the vicinity.
Hey Luke, I've never built one of these but perhaps your J Tube should have an air inlet on the bottom front? Maybe that would help with the wood stack catching fire?
Hi Luke. I just built a rocket stove water heater using your 6 inch j tube kit for the core. It went together very easily and burned well the first time. Thank you for making Cement fiber board much more accessible material for rocket cores, it works so well and is so much easier than fire brick or the other options for cores. I would be very interested in this batch box kit if you started offering them. My dad just built a metal shop building in central Oregon and we'd like to build a rocket mass heater for it. The batch box would be a much better option for that use, since he could get the fire started, load it up, and them get to work on his projects without having to feed the heater as often as he would with a J tube. Any chance you would be offering an 8 inch batch box core?
Jesse! I remember you from when you lived up in Montana at Paul's. My brother Jake came up and did some insulation with you at one point. When I shipped out your core I thought your name sounded familiar. Great to hear from you, and thanks for the feedback. Have you got any photos/video of the water heater you put together with the core I shipped you? I don't have many photos of my cores in action yet. An 8" batch is definitely a possibility. It will use more materials than a 6". I was working on the 6" batch for a while but still have some final details to work out. A main issue right now is figuring out what to line the batch box with. Matt's designs call for lining just with the ceramic fiber and I have questions about the long term durability with that approach. My preference would be a fire brick lining like the feed tube for the J. I'll shoot you an e-mail with some thoughts...
The firewood we were using was too long. Normally you'd have a brick surround of some sort that elongates the height of the feed tube and allows for longer wood.