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54 1,656 My attempt(s) at making geopolymer with acid activated clay
by smartliketruck
Feb 13, 2019 12:31:34 GMT -8

Materials, Casting, Refractories, Etc

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newBookmarkLockedFalling dear donkey, master of cob
talltuk 10 2,847 by karl
Dec 18, 2017 16:05:54 GMT -8
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newBookmarkLockedFalling Testing your soils for clay
Donkey 11 4,950 by Orange
Nov 26, 2017 10:39:23 GMT -8
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newBookmarkLockedFalling Anyone need some subsoil for COB - northern utah
gadget 0 83 by gadget
Jul 5, 2019 21:11:28 GMT -8
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newBookmarkLockedFalling Stackable heat riser.
dirtdevil 12 329 by matthewwalker
Jun 28, 2019 5:42:35 GMT -8
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newBookmarkLockedFalling Rammed earth bell
dryland 5 274 by dryland
Jun 18, 2019 18:40:32 GMT -8
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newBookmarkLockedFalling Home made rigidizer for ceramic fiber - looking for recipe
gadget 4 239 by gadget
Jun 13, 2019 20:13:04 GMT -8
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newBookmarkLockedFalling Ceramic fiber blanket - safe to eat?
wiscojames 9 310 by Orange
May 30, 2019 20:51:21 GMT -8
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newBookmarkLockedFalling Best kind of mixing paddle for refractory cement?
ronyon 4 231 by keithturtle
May 9, 2019 21:46:30 GMT -8
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newBookmarkLockedFalling Can I use chunks of scrap metal as part of my mass?
sidfishus 4 229 by coastalrocketeer
Apr 18, 2019 19:12:53 GMT -8
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newBookmarkLockedFalling Cement for building brick bell?
martyn 7 742 by BenAlexanderT
Apr 10, 2019 12:50:14 GMT -8
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newBookmarkLockedFalling Clay pipes works. Superb!
satamax 5 548 by vortex
Jan 29, 2019 14:45:16 GMT -8
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newBookmarkLockedFalling Ceramic Fiber Build Discussion
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matthewwalker 58 6,889 by johnjorgensen
Jan 26, 2019 10:28:13 GMT -8
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newBookmarkLockedFalling Low cost glass option??
vesuvius 2 324 by vortex
Jan 5, 2019 2:05:46 GMT -8
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newBookmarkLockedFalling Refractory cement and concrete
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kkp 44 2,779 by coastalrocketeer
Nov 7, 2018 10:47:17 GMT -8
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newBookmarkLockedFalling Bell bricks?
satamax 6 1,725 by etownandrew
Nov 5, 2018 16:27:08 GMT -8
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newBookmarkLockedFalling Building over a gap
dryland 5 437 by dryland
Oct 28, 2018 5:48:54 GMT -8
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newBookmarkLockedFalling article about fine particle filter
patamos 1 272 by matthewwalker
Oct 23, 2018 12:34:29 GMT -8
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newBookmarkLockedFalling Chimney caps
morticcio 11 1,649 by wolf1004
Sept 2, 2018 15:41:23 GMT -8
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newBookmarkLockedFalling used refractory bricks
fuegos 3 428 by belgiangulch
Aug 31, 2018 4:18:40 GMT -8
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newBookmarkLockedFalling Calcium silicate pipe insulation?
smartliketruck 6 469 by vortex
Jul 28, 2018 8:39:33 GMT -8

Shoutbox

smarty: Dan my batchbox reached 1150C so refractory cement rated to at least 1200C May 21, 2018 22:53:56 GMT -8
mercedes: Not sure where this question will end up...I just registered. HOW THICK SHOULD PERLITE/VERMICULATE/CLAY INSULATION BE BEHIND THE THERMAL BATTERY/COB BENCH IF IT BACKS UP TO A STRAW BALE WALL? Thanks! Can you please also post me: nathomegal@gmail.com thnx!! May 28, 2018 20:05:23 GMT -8
kkp: Mercedes: Benches don't get real hot. In fact, they are rather cool compared to other areas. You shouldn't need a mix like you described Jun 7, 2018 18:10:52 GMT -8
maartenmartens: beste Peter, ik heb je eergisteren een mail gestuurd via het contact formulier op je website , heb je die goed ontvangen ? mvg Maarten Martens, architect - geobioloog (mail betreffende de bouw van onze eigen RMH) Jun 20, 2018 13:21:57 GMT -8
martinm: any one here with info \ experience with heat (from a mass heater) distribution with ducts throughout two storey house ? Sept 8, 2018 22:58:52 GMT -8
padica: Good morning, this is a wonderful subject, please someone can help me with the theme of double and triple combustion, how it is achieved, theory and design, thank you Sept 15, 2018 7:13:40 GMT -8
wiscojames: I'm afraid you won't get a response to such a vague question - I suggest reading through some of the threads related to your questions before asking for an explanation. People will be very generous with their knowledge if your question is more specific. Sept 18, 2018 4:48:00 GMT -8
drjmf: How do i make this more powerful and efficient ? Need more BTUs up the chimney to heat a 100 litre water jacket around the black flue pipe........ www.youtube.com/watch?v=SKcUXeHose0&feature=youtu.be Oct 2, 2018 3:50:52 GMT -8
daniel: in my experience as I am working now on something of that nature, I have thought of making a heat exchanger and distributing the heat through vents using a slower fan. Now after a few years I realize that mass heaters give out primarily radiant heat, for Nov 30, 2018 12:48:38 GMT -8
coastalrocketeer: Anyone posting in this shout box... if you have something you want people to see and respond to, create a thread in the appropriate forum section... this is not the place... Dec 16, 2018 18:10:49 GMT -8
vesuvius: High Temperature Glass options, Jan 4, 2019 16:28:17 GMT -8
vesuvius: Do any of you have experience with using the glass from home oven doors on a rocket stove? I'd like to have a viewing port on my stove but don't want to fork out for new ceramic glass. Any thought as to whether it would take the heat of a rocket stove? Jan 4, 2019 16:30:40 GMT -8
yaya: you dont need the blowair for that temp.. Jan 13, 2019 16:43:57 GMT -8
flybywire: Glass window from an old washing machine is designed to take high temps. Cheap solution to your need. :) Jan 27, 2019 0:10:58 GMT -8 *
coastalrocketeer: Anyone posting in this shout box... if you have something you want people to see and respond to, create a thread in the appropriate forum section... this is not the place to have a discussion... it is for short announcements Feb 7, 2019 0:11:23 GMT -8
coastalrocketeer: you won’t likely get replies to questions here, and it is not a spot that makes holding an ongoing discussion possible... Feb 7, 2019 0:12:22 GMT -8
hof: 1 horizontal Feb 19, 2019 12:01:48 GMT -8
TexasGonzo: Sooooo glad I found this site! Its always rewarding to find such a super group of folks! To any and all, feel free to PM me anytime. Thanks for having me! Mar 11, 2019 18:56:41 GMT -8
jlmtech: GADGET: CONSIDER USING A JET PUMP INSTEAD OF A BLOWER FAN TO INDUCE DRAFT; NO CLOGGING. Mar 26, 2019 8:19:28 GMT -8
michaelegan: i am unable to open the sketchup files on my mac. I used sketchup a few years back but apparently the company now requires a subscription. does anyone have any advice/instructions on how to use the program or how to view pictures without spending money? Aug 20, 2019 18:41:48 GMT -8