<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">Rok, <div>Good to hear from you! Thanks as ever for your work on finding practical ways to extend the life of ceramic liners . Its an issue which has promised alot of folks as much -in terms of thermal insulation and resulting thermal efficiency as it frustrates-in terms of your mentioned issue of low structural durability. </div><div>Do you find it easier to use a cubic shape for the clay sand exterior? I wonder because , it seems that a simple cylindrical form would be easier to shape and use less material and still be as effective as a thermal ‘ cushion given the cylindrical shape of the rocket stove itself .</div><div><br></div><div>Richard Stanley</div><div><br><br><div dir="ltr">Sent from my iPhone</div><div dir="ltr"><br>On Jun 27, 2022, at 7:46 AM, Rok Oblak <rok.stoves@gmail.com> wrote:<br><br></div><div dir="ltr"><div dir="ltr">Dear stovers,<div><br></div><div>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. </div><div><br></div><div>It showed up as a great update to the holey Roket stove <a href="https://briquettestoves.com/">https://briquettestoves.com/</a> 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. </div><div><br></div><div>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.</div><div><br></div><div>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. </div><div><br></div><div>Happy and healthy cooking!</div><div>Rok<br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div><b>Rok Oblak, MAA Design</b><br><br><a href="mailto:rok.stoves@gmail.com" target="_blank">rok.stoves@gmail.com</a><br><a href="http://www.holeyroket.com/" target="_blank">briquettestoves.com</a><br><br>Gregorciceva ulica 5<br>4224 Gorenja vas<br>Slovenia<br></div></div></div></div>
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