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  #21  
Old 06-12-2012, 10:52 AM
Xene's Avatar
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Default Re: Gaps, bumps, uneven dome top....how bad can it be?

So...you wanna know what I decided?



Took me an hour to knock it out. Working from the inside was the pits, so as soon as I could see the cracks on top, I moved to that loose brick on the outside and pulverized it. The brick chisel I got was the perfect tool. Once I got it started it did break apart rather quickly, working from the top. There is something to be said about shoddy construction after all!

So...this time I'm going to do it right. Here I go.....
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  #22  
Old 06-12-2012, 11:58 AM
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Default Re: Gaps, bumps, uneven dome top....how bad can it be?

Cold chisel . Should be required kit for all

To avoid the gaps - do the twist/tilt thing. Assuming you're going to stick with 11 bricks on the next course - 16 degree angles on the sides should make the fit perfect [formula for side angle is (90-((180-(360/# of bricks))/2))]. When you cut the brick, tip it up at the same angle as the course you are on. Probably 70-75 degrees for you right now. You'll also need to figure out the width for each you need based on good ol' 2*Pi*R.

Just realized that may sound a bit didactic. You may be a math genius so please understand that I don't mean it that way. I only figured this out in my last 2 or 3 courses and it was like an epiphany for my brick cutting. The waters parted and the bricks just jumped in to place after that
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  #23  
Old 06-12-2012, 02:06 PM
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Default Re: Gaps, bumps, uneven dome top....how bad can it be?

Math genius I'm NOT - I can't even identify with a 75-degree angle. I'm eyeballing this entire thing . Well, pretty close. If I had to use math to build it, it wouldn't get built at all. I'm math dyslexic - true story. Figuring how much insulation blanket I need for the next step is already stressing me out. Augh!
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  #24  
Old 06-12-2012, 02:36 PM
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Default Re: Gaps, bumps, uneven dome top....how bad can it be?

Quote:
Originally Posted by Xene View Post
Math genius I'm NOT - I can't even identify with a 75-degree angle. I'm eyeballing this entire thing . Well, pretty close. If I had to use math to build it, it wouldn't get built at all. I'm math dyslexic - true story. Figuring how much insulation blanket I need for the next step is already stressing me out. Augh!
I use the "level" app in my smartphone to check the angle of the courses.

You are doing pretty well for eyeballing it!
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  #25  
Old 06-12-2012, 03:20 PM
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Default Re: Gaps, bumps, uneven dome top....how bad can it be?

Quote:
Originally Posted by Xene View Post
I'm math dyslexic - true story. Figuring how much insulation blanket I need for the next step is already stressing me out. Augh!

Xene, I've been listening to a audio book "The Dyslexic Advantage" and if you're not kidding about being Dyslexic it's worth checking out the adult test at dislexicadvantage.com. I can count 4 generations of dislexics in my family and the info really puts family and personal things in context. Recomended.. Regarding how much blanket, just ask and you shall have answers..

Chris

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  #26  
Old 06-13-2012, 05:03 PM
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Default Re: Gaps, bumps, uneven dome top....how bad can it be?

Hey Chris, I thanks for the suggestion, I think I will check it out. I'm definitely not wired for dealing with numbers - I get heart palpitations and my brain freezes up. Funny too, since my last job was computer geek

OKAY - I know you've all been on pins and needles as to how I managed this second attempt....and if I did it for a third time, I'm sure it would be perfect, but I'm totally pleased with how it came out. All these bricks lock each other into place. My attempt at putting a cross in the top got a little wonky, but it is the thought that counts and with a much trouble as I've had, and as tight as those ended up in there (even though it looks like a lot of mortar, it really isn't) I know I can live with it this way.



I did it all without a form, I couldn't imagine doing it without seeing the underside. I cut the brick yesterday, yep, all the full/deep width. I made a pattern of the hole I had to fill with insulation board (whatever that pink stuff is called) and laid them in bowl shape/opposite. Then mortared them in sections of 5 - but I'd do 3 if I was to do it again - and I'd let then dry longer, some broke apart. Today when they were stiff I mortared them into the hole. It was a little tricky, but not terrible. The sticks worked great. The last two bricks I hammered in together into a mess of mortar and the locked perfectly. I immediately removed the sticks and did nearly the same thing for the middle. I used an old saw blade to keep it all together until I put in the key, removed it all right away, then hammered them to the exact location/depth, filled in any crevices while everything was wet and mushy...was a good day.

I know I say it every time, but I really mean it...thanks for all your great tips - advice, concern, and help! It's beer time!
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  #27  
Old 06-13-2012, 06:38 PM
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Thumbs up Re: Gaps, bumps, uneven dome top....how bad can it be?

I'd say it turned out better than I could imagine! Well done!
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  #28  
Old 06-16-2012, 10:58 AM
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Default Re: Gaps, bumps, uneven dome top....how bad can it be?

Well done Xene

Quote:
My attempt at putting a cross in the top got a little wonky, but it is the thought that counts
And that thought is - "In hoc signo vinces" I think the cross is good - not too perfect - you don't want that - it's kind of like this one below:

btw I hate being pedantic (who am I kidding?) but the word is dyscalculia
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  #29  
Old 06-18-2012, 10:29 AM
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Default Re: Gaps, bumps, uneven dome top....how bad can it be?

Amac - indeed I did conquer...well up to this point any way.

I can't believe I've never heard the term dyscalculia - that would be exactly my problem. On the other hand, I suffer from acute hyperartistica - fabulous for most problem solving...just don't get me near the accounting. I don't really do well with budgets either (that could just be a woman thing though.)

So here is that last picture I took with everything cleared out:


And yes...another error on this oven build, my herringbone pattern for the floor does not go at the diagonal. Figured I better point that out before you perfectionists try to draw that bit to my attention.

I should really learn how to do that thumbnail attachment thing...my pictures are huge.
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  #30  
Old 06-18-2012, 10:59 AM
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Default Re: Gaps, bumps, uneven dome top....how bad can it be?

Looks great Xene!

thumbnails - When you're entering a post, go to "advanced" and click the paperclip icon in the area above the where you're typing. It's right next to the smiley face. That should pop up a window that lets you upload a picture as an attachment. That's how you get the thumbnail view.
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