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Post by gadget on Jan 9, 2023 10:09:15 GMT -8
What is the final surface finish on these units? 220 - 221, what ever it takes.
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Post by martyn on Jan 9, 2023 10:37:29 GMT -8
It might be acrylic plaster, that is what I use to top coat my pizza ovens, comes in many colours, flexible crack resistant and easy to apply.
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Post by josephcrawley on Jan 9, 2023 13:14:31 GMT -8
What is the final surface finish on these units? 220 - 221, what ever it takes. Not everyone has seen Mr mom.
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Post by Solomon on Jan 10, 2023 11:35:44 GMT -8
What are the operating dimensions of these cores?
The frame looks hand made, but the door doesn't. Where is the door from?
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Post by peterberg on Jan 11, 2023 0:09:09 GMT -8
What are the operating dimensions of these cores? 200 mm or 8". The frame looks hand made, but the door doesn't. Where is the door from? A vendor in Finland, I am led to believe, might be Pisla.
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Post by Solomon on Jan 11, 2023 19:18:56 GMT -8
So you're saying the design dimensions follow your spreadsheet?
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Post by peterberg on Jan 12, 2023 2:33:48 GMT -8
So you're saying the design dimensions follow your spreadsheet? Not my spreadsheet, since I haven't any. The DSR3's dimensions don't follow the one on the batchrocket site, height and width of the firebox are more or less the same here.
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Post by skywalker on Feb 2, 2023 11:43:38 GMT -8
What is the final surface finish on these units? It's a clay finish.
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iau461
Junior Member
Posts: 60
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Post by iau461 on Mar 3, 2023 13:53:08 GMT -8
The horizontal tube is a vacuum formed ceramic fibre riser sleeve. This one in particular is made by Quinsis in Belgium. Google 'riser sleeve' to find other vendors. Questions for Peter, or for the Loam Freemanship, or anyone with opinions: Back in June 2021, when working on his prototype, Peter cited health concerns with loose ceramic fibers as being a reason to avoid vacuum formed ceramic fiber sleeves, in favor of "reassuring hard kiln baked clay ceramics". Which nobody in the US seems to have found a source for. Is the Loam Freemanship doing anything special to address the fiber concern? Maybe just making cuts outdoors and wearing masks? Is it a bad idea to apply a zircon coating to a vacuum formed tube, perhaps inside and outside, to minimize loose fibers while also increasing afterburner temps/efficiency?
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Post by peterberg on Mar 4, 2023 2:49:31 GMT -8
Back in June 2021, when working on his prototype, Peter cited health concerns with loose ceramic fibers as being a reason to avoid vacuum formed ceramic fiber sleeves, in favor of "reassuring hard kiln baked clay ceramics". Which nobody in the US seems to have found a source for. Is the Loam Freemanship doing anything special to address the fiber concern? Maybe just making cuts outdoors and wearing masks? You are right, I seem to have an opinion about almost everything. The difference between my umpteen development project and what the Loam Freemanship is doing: they are building closed box masonry heaters. The top box is visable in only one heater, their first DSR3. All the others (about 10 if I remember correctly) doesn't sport such a window. In my development model, the top box was accessible to the customer. The ceramic fiber tube won't give off any loose ceramic fibers as long as it isn't touched. So this would be a real concern during development. And second, as long as those fibre tubes aren't heated, loose fibres aren't a concern. As far as I know, I consider it advisable to cutting their tubes outside, spraying it wet while cutting, using hand tools only and a shop vac to remove the dust. Maybe they are using masks as well but I am not sure about that. Is it a bad idea to apply a zircon coating to a vacuum formed tube, perhaps inside and outside, to minimize loose fibers while also increasing afterburner temps/efficiency? I am sure it won't do any harm although this isn't done and tested in a controlled environment. Whether or not it would increase efficiency remains unproven, in my opinion.
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iau461
Junior Member
Posts: 60
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Post by iau461 on Mar 4, 2023 22:08:33 GMT -8
Thank you so much for the clarification Peter. It would be hard to part with the little observation window, but I can see the safety logic, and it would simplify the build too.
If I may bother you with one more question: I notice that in the Loam Freemanship's first stove, there are no "stress relief" cuts in the afterburner, as you used in your hard ceramic tube. I presume that with the different material, and perhaps with the flattened bottom which might allow for some thermal expansion, they have not experienced any cracking? If the answer is a Loam Freemanship design secret, I understand. Thanks again for all you do.
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Post by skywalker on Mar 7, 2023 14:30:31 GMT -8
Thank you so much for the clarification Peter. It would be hard to part with the little observation window, but I can see the safety logic, and it would simplify the build too. If I may bother you with one more question: I notice that in the Loam Freemanship's first stove, there are no "stress relief" cuts in the afterburner, as you used in your hard ceramic tube. I presume that with the different material, and perhaps with the flattened bottom which might allow for some thermal expansion, they have not experienced any cracking? If the answer is a Loam Freemanship design secret, I understand. Thanks again for all you do. No secrets here! The material we use is ceramic fiber mixed with clay. This is being vaccuum formed into a mold. Though quit sturdy the material remains flexibele enough to withstand thermal expansion. And yes we always us safety masks when cutting the tubes. The manufacturer told us the material is not harmful, only its always better to avoid dust. Once heated to higher temperatures the material becomes hazardous and asbestos like. Same with ceramic fibre blankets often being used in stoves
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Post by skywalker on Mar 7, 2023 14:34:41 GMT -8
The horizontal tube is a vacuum formed ceramic fibre riser sleeve. This one in particular is made by Quinsis in Belgium. Google 'riser sleeve' to find other vendors. Questions for Peter, or for the Loam Freemanship, or anyone with opinions: Back in June 2021, when working on his prototype, Peter cited health concerns with loose ceramic fibers as being a reason to avoid vacuum formed ceramic fiber sleeves, in favor of "reassuring hard kiln baked clay ceramics". Which nobody in the US seems to have found a source for. Is the Loam Freemanship doing anything special to address the fiber concern? Maybe just making cuts outdoors and wearing masks? Is it a bad idea to apply a zircon coating to a vacuum formed tube, perhaps inside and outside, to minimize loose fibers while also increasing afterburner temps/efficiency? We get these risers at a special manufacturer for vaccuum formed ceramic tubes. Around 75 us dollars. I can give you the contact if you like. And I guess they can ship it to the US. Just order a bunch. They dont rot.
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iau461
Junior Member
Posts: 60
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Post by iau461 on Mar 7, 2023 17:10:07 GMT -8
We get these risers at a special manufacturer for vaccuum formed ceramic tubes. Around 75 us dollars. I can give you the contact if you like. And I guess they can ship it to the US. Just order a bunch. They dont rot. Yes please, and thank you very much!
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Post by skywalker on Mar 8, 2023 0:16:48 GMT -8
Yes please, and thank you very much! www.quinsis.com/This is the company. Our contact is Rob Leemans, you can contact them and ask for ceramic vaccuum formed tubes.
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