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Post by oblertone on Aug 29, 2020 14:46:46 GMT
A picture paints ...
However, most twin wall flue systems come with a register* plate which is a flanged ring that connects (usually by 1/8 twist) a length of flue to whatever the register plate is screwed to, in this case your WFO. A 6" register plate will fit over your 5.5" stub which you can either reduce or just leave in place.
eBay is a good source of single lengths of twin-wall, as will be your local stove fitter.
*aka Anchor plate, console plate
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Post by oblertone on Aug 25, 2020 7:41:37 GMT
I’ll bet your sock drawer is a sight to behold ! That is probably the most meticulous wfo build I’ve ever seen; very impressive.
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Post by oblertone on Aug 20, 2020 9:55:59 GMT
Sadly the Pavors should only be used to tile the floor in front of the oven; if used in the construction they will crack and spall badly as they are produced without being fired. What you need for the dome is half-bricks, preferably old bricks without indents or holes. I salvaged mine from a neighbours skip but a visit to a local salvage yard may e productive, especially as you'll be using them cut in half and can use damaged ones.
The heater blocks can be used as your cooking floor (as per my build below) and some have even used them for the oven shell; just be aware they are very difficult to cut.
FWIW I'd build the stand using your thermolites then clad it in red clay pavers. Make a form on top and cast the base using your rebar, the a layer of thermolites laid flat as an insulating layer. On top of that lay your heater blocks on a dry sand mix and start forming your dome.
Remember that the cooking floor should be at the elbow height of the main user otherwise you'll be stooping, and work backwards from there.
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Post by oblertone on Aug 19, 2020 18:09:19 GMT
The floor of your wfo will be subject to both impact and abrasion so I don’t think a rendered floor would be much use. Try and locate some storage heater blocks because they are often cheap, or free and make an excellent base when laid in loose sand. For your underfloor insulation you could try and find thermolite building blocks blocks (aka breeze blocks) to use as a base. Instead of your 5:1 mix; these will give you a better surface to work from.
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Post by oblertone on Aug 10, 2020 8:00:37 GMT
Try eBay or freecycle for storage heater blocks; excellent and cheap alternative.
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Post by oblertone on Aug 7, 2020 14:13:21 GMT
Hi Neil, good progress given your stated limitations; just one point though, if you’ve got a bad back already don’t make it worse by placing the oven floor too low because that will cause you to stoop. The cooking surface should be at the elbow height of the main user.
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Post by oblertone on Aug 7, 2020 14:08:08 GMT
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Post by oblertone on Jul 27, 2020 12:59:48 GMT
A lot of WFO builder use twin-wall insulated flue which is readily available in 1m lengths which is about all you'll need. All of these systems can be supplied with a 'Register Plate' which you attach to your entry arch (bolt, screw, cement) and the twin-wall attaches to this , normally by a twist mechanism. Have a look on eBay for used stuff as new is not cheap.
My build (link below) uses this as I dismount the flue for ease of storage.
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Post by oblertone on Jul 24, 2020 12:03:00 GMT
The simple answer is 'I don't know'; however I built my WFO using scavenged house bricks about five years ago and despite fairly regular use it has shown no signs of 'spalling'.
If you are viewing this on a PC you'll see my build thread below; if using a phone then maybe not.
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Post by oblertone on Jul 24, 2020 9:40:47 GMT
Vitcas seem to be the supplier of choice judging by the number of builds on here, but I’m sure other suppliers are around.
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Post by oblertone on Jul 24, 2020 9:36:44 GMT
Fire bricks come in different sizes so a generic ‘150’ may or may not be enough. Insulating sheet, i got mine on eBay but other routes are available. Insulation blanket is a little more specialist but readily available. For a one-stop-shop try Kilnlinings where the owner is very aware of the needs of WFO builders.
The ‘wet’ ingredients can be had from most building supply places, Wickes, Jewsons etc but you really only need Sand, Cement, Lime, Clay to make ‘homebrew mortar’ which is all you’ll need for a WFO and is superior to so called fire-cement in many ways.
To reduce costs even further, consider using ordinary building bricks for your dome, leaving firebricks for the cooking floor only. Try reclamation yards for old ‘solids’ i.e. no frogs, holes or indents and remember that as you’ll be cutting them in half you can buy damaged ones even cheaper. FWIW i got my bricks from a neighbours skip for nothing.
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Post by oblertone on Jul 23, 2020 13:00:30 GMT
A flue will definitely help re the smoke issues as it forces the oven to breathe properly and you get better combustion; but as you say, the key is DRY logs and not too many at a time.
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Post by oblertone on Jul 23, 2020 12:56:35 GMT
I got mine from eBay, but postage could be an issue.
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Post by oblertone on Jul 22, 2020 10:15:27 GMT
Welcome to the site where you'll find examples of both, and a few others. Ask any pertinent questions and you'll invariably get a response as most have been asked before.
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Post by oblertone on Jul 14, 2020 8:44:47 GMT
When i last worked our office was in Southwark Bridge Road and was universally known as SBR, quite what you are considering using in your oven is beyond me !
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