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Owwwh yeah, that arch will just push those supports out of the way as it flattens.
front arch supports are interlocked with the rear arch supports, there is couple of bricks that cut on angle and cross over to the other one
also flu gallery is extends past the outer arch bricks so i hope there isn't a lot of force sideways?
i attached pic of what finished it will look hope i don't have to be freaking out :O
I haven't seen any domes that use castable for the plug. I've seen it used for flues, but not in combo with brick for the dome. If you did use it for the plug, you would not need a steam channel. I suspect you are thinking about the release plugs that Gulf and Russell used with their insulating vermicrete layers. The castable should cure without the need for a steam channel. It would be open to your oven on the inside...
Personally, I would stick with a single material for the dome - just to feel like I am not taking risks with differing thermal expansion.
i see how i go with cutting the keystone, if i do good job i will use it as normal but if i cut it on small side with largish gaps still left then i might use castable instead of mortart for that section this way i don't have huge castable keystone
thanks guys for posting, i'm quite confident with things but i always worry i'm doing something wrong way so i like to double check here
Looking good. No need to rush, the oven will not fall apart because you go at it slowly.
Hint, you will need to buttress that arch.
so i keep on going slow then
done another course today just managed to clean up and cover before rain showed up
can you please put more light on what and where need that buttress, i'm new to brickwork so that is first time i hear that word and quick search gave multiple options so i'm confused now
I haven't seen any domes that use castable for the plug. I've seen it used for flues, but not in combo with brick for the dome. If you did use it for the plug, you would not need a steam channel. I suspect you are thinking about the release plugs that Gulf and Russell used with their insulating vermicrete layers. The castable should cure without the need for a steam channel. It would be open to your oven on the inside...
Personally, I would stick with a single material for the dome - just to feel like I am not taking risks with differing thermal expansion.
due to work i'm moving quite slow as there is very little time left in a day, should i rush it bit more? is there any problems with taking so long to finish dome?
still would love to hear some tips on castable usage for keystone, i seen some comment about the need to build permanent steam channel if i do use castable? is this right if so how would i go about it?
since here posting again got quick little question, when i get close to finishing top of the dome i was thinking of doing large batch of castable as keystone, i really like this idea but would like to hear from people especially if it is bad idea. TIA
for anyone that cares, my progress so far
been moving quite slow, had few bad days and staying in bed till quite late but sooner or later i will get there
Fire brick are hardly ever perfect..I'm not surprised you had lippage that you had to grind.
To answer your question...no it doesn't matter if there is a chip here and there. Look at the all the old community ovens still in use and you will see a beat up floor. It adds character and doesn't effect the performance at all.
i do worry about everything all the time so here is another question.
i didn't get a chance to start my dome today but i did clean up the floor and grinded down all high edges in the floor so the peel doesn't hit them, while doing this i noticed that few edges are chipped in handful of spots is this going to be a problem of any kind?
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