[Stoves] SPAM Re: SPAM Re: Briquette stove in cob

Tue Jul 12 06:20:21 CDT 2022

Thanks Ron, some explanations below:

On Wed, Jul 6, 2022 at 5:59 PM Richard Stanley <rstanley at mind.net> wrote:

> Rok good point.  To each his or her own ! Your concept is great either
> way!!
> Richard
> Ps,. Slava Ukraine
>
> Sent from my iPhone
>
> On Jul 5, 2022, at 5:43 PM, Ronal Larson <rongretlarson at comcast.net>
> wrote:
>
> Rok: and ccs
>
> Thanks for many response, inserts below.
>
>
>
> On Jul 4, 2022, at 12:03 AM, Rok Oblak <rok.stoves at gmail.com> wrote:
>
> Hey Ron,
>
> 2. cob is a natural material building method/ material, composed of clay,
> sand and straw. https://en.wikipedia.org/wiki/Cob_(material)
> It has good heat accumulation properties, while the straw provides some
> insulation and durability - so all these make a nice stove structure.
> Accumulation can be reduced with a fired ceramic liner,which gives a faster
> heat transfer to the pot and it makes it more durable as well, as the heat
> would crack the cob eventually. As I've written in the email, i like the
> notion of building an extra surface right next to the fire hole, so its
> like a modern kitchen stove-top, where you put your hot pots. Cob is a
> traditional building method in many countries and its gaining popularity in
> Europe and other western countries as moder building materials are getting
> more expensive and people are getting sensitive about the materials they
> implement in their houses. Natural materials would have better properties,
> like sound insulation, air cleaning, heat retention, etc.
>
> RWL1.  “Cob” (new to me) is a word replaced by  (not quite the same)
> “adobe”.in Colorado.  But now - cob looks better - no need for making and
> drying bricks.  Some fantastic lifetimes achieved with cob construction..
>
Yes, adobe is usually used for naming cob bricks

Very surprised to see it recommended for chimneys.  Clearly needs more
> application to stoves.
> Kevin McLean is already adding earthen “side” materials to his “Sun24”
> stoves - but maybe not yet in the recommended 1-3-1 ratio for cob.
> Anyone else using cob with stoves?
>
I haven't seen any as well, would be interesting

>
> I recently started to collaborate at Krater, production space in Ljubljana
> / Slovenia, where we study natural material implementation as building
> materials and product design  We started with invasive species of plants,
> like japanese knotweed and have this paper brand https://notweedpaper.com/
> We implemented invasive species in cob material, like Goldenrod and
> Knotweed and some others. Also made biomass briquettes from several
> different species. We also have a lot of clay and gravel and sand on site,
> so its easy to experiment.
>
> RWL2:  I was surprised at the biomass species that should not be used with
> cob.
> Nice looking paper.   I have friends who have recently begun making and
> selling a paper made from hemp stalks..   Lots of waste in hemp farming.
>
Yes, you can make paper out of any wood-based plants, that have some fibers
in stalks; I've made corn paper out of corn husks as well

>
>
> I was leading the workshop with https://27.bio.si/ where we are building
> a tea pavillion to demonstrate using various 'wild' matrials in
> contemporary designs, so we have built the cob stove to show how easy and
> applicable it is to almost every living environment in the world
>
> RWL3:   There has been quite a bit of material recently on “Urban
> Forests”.  The standard is to eproduce at least 25-30 of the original
> native trees for that area.  Should be better tied to biochar.
>
You have any materials at hand I could see? Some of my friends are also
developing this area of  “Urban Forests” . Krater is located in 25 yrs old
construction pit in Ljubljana, covered with a very unique mix of plants,
native, invasive, urban..

>
>
> I currently have some other projects on the go, but am looking for extra
> funds for development - if any of you happen to know for some we could
> apply, I'd be happy to know about. Also specifically regarding the cooking
> stoves, designing kitchens, etc. Richard, I have written to Nora Feldmar,
> but she did not reply - do you have any contacts with her still? I've had
> some corporate work in last 10 years but finally saved some moneys and have
> a small support from Slovenia government now for the next 5 years to work
> more on development projects.
>
> 3. I haven't done any char-making experiments with my stove, but Jed did
> in his projects, like you know already.
>
> RWL4.  How many residents around your area are heating and or cooking with
> wood?   With charcoal production, they can make, rather than spend, money
> on both - and help the climate. With round briquettes, the pyrolysis front
> moving out radially from the central hole seems to do so very favorably,
> with good charcoal resulting (this per Joshua)
>
Heating with wood is still pretty popular in the countryside, as we have
60% of the country covered with forests and it makes a viable alternative
to expensive gas or coal or electricity. But cooking is rare, maybe really
old houses in remote hills still use it; more often for baking bread

>
> 4. Funding from Finland was only for the short trip to Malawi, where I
> started thinking about briquette stoves, back in 2004. Than I got some
> support from our university in Vancouver/BC, bt that was it pretty much,
> apart from my master thesis on vernacular, open source design of cooking
> stoves in developing countries.
>
> RWL5:  Is your Master’s thesis publicly available?
>
Yes, you can download it from my site
https://briquettestoves.com/2009/06/21/15/
https://holeyroket.files.wordpress.com/2009/06/rokoblak_hr_thesis.pdf

>
>
> 5. Yes, Joshua really took the idea of the Roket stove to another level!
> Joshua, is cob building active in your area?
>
> RWL6:  Joshua has just responded in a different thread - with many changes
> (and recent reverse changes) in his life.
>  I don’t recall Josh ever commenting on his own personal clay formula -
> but I doubt he is using cob - as all of his work goes through kiln
> firings.  He will have optimized to get crack-free strengt
>
> Thanks for such a full response.  We all should be doing as much as your
> Krater group.
>
Thanks Ron for your reply!

>
> Ron
>
>
> Thanks to all for the feedback!
> Rok
>
> On Mon, Jul 4, 2022 at 4:31 AM Ronal Larson <rongretlarson at comcast.net>
> wrote:
>
>> Rok and List:  cc Joshua and Richard
>>
>> 1.  Thanks for returning to the stoves list.  Yours was a major topic of
>> conversation many (15?) years ago.
>> I apologize to Richard Stanley and several others for not including their
>> later contributions.  Richard and I met at a (forgotten theme) confere4nce
>> in Boulder maybe 20 years ago.  Good to hear he also is still active.
>>
>> 2.  Can you expand on the word “cob” below.
>> Some very nice-looking stoves in your photos.
>>
>> 3.   Many on this list are investigating. char-making stoves these days.
>> I remember reading a little about the Roket and char-making.  Anything new
>> on the char-making front at your company?  Or in your part of Europe?
>> I ask because char is so important for climate and other reasons.
>>
>> 4.  At your excellent site below (https://briquettestoves.com/ ) there
>> was a nice (but to me unknown) story about your receiving  funding from
>> Finland to develop the Roket.  Anything more on that we should hear?   Good
>> for the Finns!
>> 5.  There were also nice tributes to Joshua Guinto and his work with and
>> extensions of the Rocket toward char-making and biochar.
>>  Like you, I think Jed is the best artist in the whole stove world.  And
>> sculptor and designer.
>> I was especially impressed at his 2013 paper (new to me) which couples to
>> your work.
>> I include him to get an update on that very advanced 2013 paper found at:
>>
>> https://holeyroket.files.wordpress.com/2013/05/the-holey-roket-stove-and-biochar-project.pdf
>> In order to keep this message only to Rokets,  I am starting another
>> separate message to Joshua.
>>
>> Ron
>>
>>
>> On Jun 27, 2022, at 6:17 AM, Rok Oblak <rok.stoves at gmail.com> wrote:
>>
>> Dear stovers,
>>
>> it's been a long time since I've written in the list, but we recently
>> organized a Building with Earth workshop and one detail in the cob table
>> was an integrated cooking stove - a ceramic liner, using biomass
>> briquettes, same type as from Richard Stanley.
>>
>> It showed up as a great update to the holey Roket stove
>> https://briquettestoves.com/ as durability is a big issue as ceramic
>> liners tend to crack and break pretty easily due to temperature shocks, but
>> the cob here is making it last for a long time.
>>
>> I have mixed local found clay and a lot of fine sawdust in the liner and
>> it doesn't make any smoke, only when you push in a new briquette, there is
>> black fumes for a few seconds, until a new one ignites.
>>
>> If you happen to know any projects this principle would be good to
>> integrate, even for other types of wood, I would be happy to share my
>> experiences and possibly collaborate on redesigning existing stoves with
>> this alternative solution.
>>
>> Happy and healthy cooking!
>> Rok
>>
>> --
>> *Rok Oblak, MAA Design*
>>
>> rok.stoves at gmail.com
>> briquettestoves.com <http://www.holeyroket.com/>
>>
>> Gregorciceva ulica 5
>> 4224 Gorenja vas
>> Slovenia
>> <IMG_1230.jpg><IMG_1191.jpg><IMG_1161.jpg>
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>>
>>
>
> --
> *Rok Oblak, MAA Design*
>
> rok.stoves at gmail.com
> briquettestoves.com <http://www.holeyroket.com/>
>
> Gregorciceva ulica 5
> 4224 Gorenja vas
> Slovenia
>
>
>

-- 
*Rok Oblak, MAA Design*

rok.stoves at gmail.com
briquettestoves.com <http://www.holeyroket.com/>

Gregorciceva ulica 5
4224 Gorenja vas
Slovenia
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[Stoves] ***SPAM*** Re: ***SPAM*** Re: Briquette stove in cob

[Stoves] SPAM Re: SPAM Re: Briquette stove in cob