My Brick Selection ok?

[john_aero]

Re: My Brick Selection ok?

musttakepic show them where i cut them. heavier i think than a stock firebrick

[Gulf]

Re: My Brick Selection ok?

diamond blade wont bother me as the break easy by handr

The 60+ alumina kiln brick that I have do not break easily with a brick set. In fact, I can barely mark them with a brick set and hammer

[john_aero]

Re: My Brick Selection ok?

diamond blade wont bother me as the break easy by hand

BUTTT just copped on that if split in half by hand i cant turn them to make walls 4.5 inch think and join wont be as neat as cant turn rought end out due to taper

[UtahBeehiver]

Re: My Brick Selection ok?

I used super duty fire bricks on all of my build they were new surplus from an old steel mill (65% alumina) they don't get any hotter than you let them. They were all tapered so I used them where that tapers allowed for best fit. The only drawback I had is the are very hard on diamond wet saw blades, they wear them very quickly. I went through at least a dozen, but they were the cheapo blades also. You can look at my build to see where I used them. Also, Oasiscdm (aussie) is doing a build with bricks tapered like yours

[john_aero]

Re: My Brick Selection ok?

they are tapered so wont sit on floor.

could try and sit the on face and stagger them that way would interlock.

i was wondering if they would do for the 1st 2-3 chains

[david s]

Re: My Brick Selection ok?

The floor takes the most punishment, so use them there. Bricks that can withstand 1500C are not necessarily suitable for an oven that only reaches 500 C. The thermal shock characteristics are more important and they do not necessarily confer with the temperature the bricks are fired to. An example of this is the low fired sth. American pots that have good thermal shock characteristics but are only fired to around 700C. The clay body is left fairly open and able to withstand sudden temp increases so you can place these pots directly on your stove.

[john_aero]

Re: My Brick Selection ok?

Yes.........

yes to base????

[brickie in oz]

Re: My Brick Selection ok?

would the be best suited at base, mid or top of dome?

Yes.........

[john_aero]

Re: My Brick Selection ok?

so any advice on their location in dome.

would th ebe best suited at base, mid or top of dome?

[brickie in oz]

Re: My Brick Selection ok?

[QUOTE=john_aero;150961]just spotted this on the pdf file for forno oven. this mean the fire bricks i have are prob not suitable?

High duty fire brick.
These brick have very high alumina content (60% or more),
get very hot (1500?C and up) and are designed for continual
high-heat applications, such as furnaces.

How can they get that hot if you stop chucking fuel into the oven?

What it should say is, These brick have very high alumina content (60% or more),
and are designed to take temps of (1500?C and up)

[john_aero]

Re: My Brick Selection ok?

just spotted this on the pdf file for forno oven. this mean the fire bricks i have are prob not suitable?

High duty fire brick.
These brick have very high alumina content (60% or more),
get very hot (1500?C and up) and are designed for continual
high-heat applications, such as furnaces. They are
expensive, and will get too hot for cooking food. In general,
pizza wants heat between 750F and 900F, while bread and
roasts cooks best between 500F and 600F. (Note that brick
ovens are able to cook at higher temperatures without
burning because of the moist heat inside the oven and
shorter cooking times.)

[john_aero]

Re: My Brick Selection ok?

i will happily use a bolster and chisel. can get consaw too if want with hose attached but rather not as hevy to use on small bricks

if bolster and chisel works then i will use it for the bricks that are not seen

bricks with frog. fill with vermacrete or a high temp concrete like that used for bonding the dome bricks.

i was going lay red brick with the narrow side laying down so frog faces sideway. then tiles for smooth cooking floor.

also whats this???? looks like vermaculite premix. would this do as hearth and render for finish?

[UtahBeehiver]

Re: My Brick Selection ok?

Using a grinder and a diamond wheel is an option but there is going to be a ton of dust. Fabby just recently did a build with snapped headers something you may want to consider if you do not have access to a wet saw. You can save the grinder and diamond wheel for the bricks that need more work than being snapped. Just a thought.

[Tscarborough]

Re: My Brick Selection ok?

Normally the side opposite the frog will be a scraped finish, i.e. pretty rough. Laid on their side and filled with non-insulating material would be better.

[john_aero]

Re: My Brick Selection ok?

They don't have insulation under the hearth and little if any on the dome. The firebrick will take a long time to heat up, conversely they will hold that heat for a long time. The frogged brick should work OK, but the frog is going to be an issue. How do you plan on cutting them to use?

i was looking at the red frogged brick again. some of them are cracking and bit rought so not sure them would hold up to heath

was going lay them flat on side for floor, then as lay each down fill the frog section with vermaculite or other heat retaining or insulating material. then terracotta tiles on top these for cooking floor.

Dome i was going to split bricks with 9inch grinder and diamond blade.