tony uljee

just some random ramblings here---with all the interest re-sparked and the haze of smoke cleared away ,stove rocket fever flared up----and i got to enjoy watching the vids of Matt Walker Stove and Paul  inviting him to  joust over the stove types,  and although i am a masonry cook stove follower-- and now more recently a batchbox convert--the cleaner lines of design and function---i still realize the rational thinking and layout  of the rocket mass heater ---then the sheer artistry of some in the final construction is to be admired --a working piece of art ---but this led me down a re-reading of some stuff and works of the Dr Larry  Winiarski -----and Paul Wheatons plan of global domination--which i support totally -----to get more rocket mass heaters built world wide---well Dr Winiarski did achieve a start towards this , but i  think  it was hijacked , ----he carried out some work in malawi to improve the tobacco  drying industry ---attached pdf ---great success ---improved the health and  safety ,yields ,quality of end product---and lessened the damage to the forests. But this attracted more ---and more ---and the side effects have not been good----i wont go into this on here--no need to --just wi ki the tabacco industry of malawi

i am sure that if you funded the purchase and delivery of the schott glass tube required for that ai drawing , there are 460mm diameter tubes available made to order ---no prices given,with larger  diameters as special order s after consultation----that Paul could assemble a team to build your dream and test it .

one finger typing expert here, and with no link savy, it was not posted as a permies question ,but spotted it here ------- "Low -Cost ,High temperature waste disposal incinerator-a prototype by semcol" was a linkdin posting

yes i only by chance spotted it , was looking up some batchbox info and onto you tube for showing a friend on a possible build start , and there he was, talking stove and fire.

yesterday Matt Walker Stoves put up an update on broaudio , good to see and hear him again

pvc plastics are usually the hard types and tend to be more brittle --- usually no  information label moulded into it---as can be seen on HDPE and LDPE containers, there was someone asking on permies about incinerating plastic awhile back , somewhere in the Himalaya , the stove build advise was to create a longer secondary burn ---but not too an extreme heat ---as this would create NO2----and for 2 to 3 seconds at minimum---with more turbulence maybe--so the dioxins would have a long enough high temperature exposure to be broken apart and kept from recombining ---before exiting the flue---dont know how far they got with this.

yes i live in ireland now -- only recently arrived about 24 years ago----so nearly accepted by the natives---mild steel is iron more or less --element Fe---find a local metalwelder fabrication workshop ---they will show you all the examples of it available in the trade----for our intents and purposes ,aluminium and stainless steel can not be welded ---yes there are other  expensive and complex methods to join them  ---not really for us at this do it at home level. The steel i used was rusty ---so i cleaned it up with grinder and disc ---looks shiney and clean ----but not aluminium or stainless ----if you want the shine look ---there is right angle available in stainless steel ---but will cost a lot more to buy and the weld process is expensive to undertake ---i am presuming here that your metal working skillset is very basic so it would cost a lot more to have it carried out as well----using aluminium in the making of the cooking oven would also be expensive---for same reasons as in stainless steel. -----My hot water system is not working that well ---as i explained a few postings back ---i do have another idea to implement and try out ---but as i would need to dismantle the stove a bit to remove old and install the new  -----stove would be out of use for awhile----its next years project to correct this.

re reading the question ---i did not answer correctly maybe ---the cooker insert is made from stainless steel ---an old beer keg ---cut down one side --and a flat sheet of stainless welded in place ---as the floor/base of the oven---this is welded onto a frame of mild steel angle iron ---yes you can weld the two types together---its not a decorative feature ---not a structural component ---so the looks and potential rust /discolouration is not  an issue---i used the mig weld process with steel wire and CO2 gas ----beer keg was what i had to hand ---i had wanted to use mild steel sheeting ----if you go up on the mild steel sheet to say 6mm its possible to stick weld (SMAW)  this---perhaps even to stick weld the stainless together ----using bespoke weld rods for stainless would be very expensive ---ordinary steel rods could be used---but difficult to control the weld bead---not sure of your welding skill set ---so i can not recommend this.

these can be seen on page/post 1 , seventh pic down

not in spain ,in damp wet west coast of ireland ---13 C outside right now---warmish for us ---at 45 C --an outdoor solar cooking oven would be better----if it reached that high in ireland our breweries would run dry ---and there would be chaos through out the land---been using the stove at later in the day into the evening ---building up the heat storage into the walls  of the cabin--plus keeping out the damp---i used a piece of (about 3mm) aluminium sheet to make the reflective cover over the cordierite sheet that is fixed onto the oven door---the build plans of Matts stoves could use some of  it under the main core of the insulated fire bricks --for supporting the riserless core above the two heat channels---i used some (about4mm) stainless steel sheet ---had a handy sized  piece of it at the time---and i used a smaller piece of alloy sheet to support the common clay  bricks next to my core ---these are a deviation from Matts plans ---as i made my stove a bit longer ---to build in the water heating jacket---