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Post by fornocator on Sept 17, 2019 18:43:38 GMT
Hi all Finally, now I'm retired, getting down to building my oven - using reclaimed Belfast bricks (most likely) for the dome, and following this general plan: www.youtube.com/watch?v=TBxKd4HXAIE Any comments or advice? Could I use the same Belfast bricks for the oven floor, or is this a no-no? They're quite dense, very hard, and probably quite unlikely to flake in the heat imo. As a complete curve ball, has anyone tried using 1/ 2 (or 3/ 4) of a concrete pre-cast drain-pipe as an oven dome?  Can't wait to get out and get building - researching like crazy for now.... |
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Post by downunderdave on Sept 17, 2019 20:51:49 GMT
Inhaling brick dust from cutting or grinding is highly dangerous. Wear a quality respirator, not a paper dust mask. It looks like minimal floor insulation (50 mm at best) is used in this build. 100 mm of 5:1 vermicrete is the standard or 50 mm cal sil insulating board. The mixtures and proportions of the castable mix are not given in this build. A properly designed front flue requires no glue control or valve in the chimney. Download the free Pompeii oven plans from Forno Bravo for a tried and true tested build. Standard concrete does not stand up to high temperature and begins to fail north of 300C which is easily achieved in a WFO.
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Post by truckcab79 on Sept 18, 2019 9:20:15 GMT
Hi Fornocator. Welcome to the forum.
Looking forward to seeing your build progress. I’d watched that video a number of times when researching mine though in the end I went with a pre-cast inner. His method seemed to work well and I liked the fact that he seemed to be using a lot of reclaimed / found materials.
I would personally avoid the Belfast bricks as a base, not because I know they won’t work but just because if they don’t it’s going to be pretty difficult to replace them (though not impossible if you lay them loose). I’d use a proper fire brick ,or storage heater bricks if you want to save a bit of cash and find some to recycle.
Fair point raised about cutting bricks but I’ll assume you’ll take responsibility for your own health and safety. I would say that cutting them creates a vast amount of dust so regardless of the health issues you’d want to cover up. You’ll be lucky to see let alone breathe. You can cut with a hammer and bolster to avoid the dust but I personally wouldn’t recommend it. Too much work and too inaccurate unless you’re a pro brickie. And you can of course cut wet but most of us won’t have the equipment to do so.
Only other minor thing I’d add to that video is that when he lays his cooking floor bricks out you can see he ends up with quite a few small fiddly pieces. Easily avoided if you let them all while and either draw your circle onto the bricks or make a template and move it around to get the least amount of cutting / largest bricks.
Watch lots of videos, look at all the builds on here and Forno Bravo and have fun doing it!
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