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  #101  
Old 09-14-2012, 03:38 AM
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Join Date: Apr 2012
Location: South Carolina
Posts: 105
Default Re: Oven Build in SC

Well, here goes nothing! I laid out the floor and set my template up for the cutting of firebricks!! I tried to set it up to have the least amount of little pieces around the circumference but it doesn't look like you can get away from it. No matter where I placed the template there will be some small pieces to fit in to the puzzle.

Does anyone know of any tricks to avoid this or is it unavoidable?
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  #102  
Old 09-14-2012, 04:22 AM
Amac's Avatar
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Default Re: Oven Build in SC

Hi videts38
It's not difficult to avoid - just don't get hung up on keeping the pattern exact. When you see a narrow sliver - just replace that - and the brick(s) behind it and maybe beside, with a brick(s) oriented the other way - and you will be able to eliminate all the awkward cuts. I realised this just after cutting the floor and spending an inordinate amount of time cutting tiny pieces. I replaced most of them in this way. It doesn't at all affect the diagonal lines. You can also use this method to eliminate lengthwise cuts - repalce the brick with two bricks turned at right angles and the cuts will be easier.
It will take a lot of the pain from cutting the floor. It's hard to describe but simple in practice. I must make a drawing to illustrate this sometime as its a recurring problem and almost all the floors I see cut have examples I would love to replace.
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Last edited by Amac; 09-14-2012 at 04:28 AM.
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  #103  
Old 09-14-2012, 04:34 AM
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Location: South Carolina
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Default Re: Oven Build in SC

Thanks Amac,
That makes sense to me. I guess when I get home tonight from work I will be re-orientating some edge bricks to see how this works out. You know you see the pattern needed and you get blinded by it and focused, yet a little tweak in the pattern shouldn't make any difference at all.
I knew if I posted this question, someone would have a solution. Awesome!
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  #104  
Old 09-14-2012, 04:47 AM
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Default Re: Oven Build in SC

Glad to help videts - I hope it works out, it did for me - I just realised it late - but not too late. I posted this somewhere else just last week also - just can't recall where.
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  #105  
Old 09-21-2012, 06:52 AM
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Default Re: Oven Build in SC

WoooHooo!!! Finally cut my first firebrick!! And I was excited as much as I was nervous. I started to shape the WFO floor last night. I didn't get as far as I wanted but everything takes time between setting up, working for about an hour and a half and then cleaning up. But......I'm cut'n bricks! Here's my set up for the saw, I believe I owe banhxeo76 for the handcart/saw idea, so thank you sir. It helps to get the saw into the yard and is a good working height. So after setting up I got to cutting the floor firebricks. I was a little nervous about how they were going to round for the floor but after a few cuts I was put at ease. It's not that difficult; just have to take your time.

I have a question for anybody to answer: I plan a heat break at the oven entrance floor. I've seen a few on the forum and think it's a good idea. My bricks are 3" thick and I have a 3" square piece of stainless tubing with a wall thickness of 0.230". I planned on packing it in with vcrete for added insulating properties and also to angle the bricks that come into contact with it to minimize surface contact between the two. Is this to big of a piece of steel tubing for the concept? Will it act as a heat sink instead of a break? I attached a picture of the tube next to a brick.

I'd appreciate anyone's thought on this.
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Oven Build in SC-sdc11721-optimized.jpg   Oven Build in SC-sdc11722-optimized.jpg   Oven Build in SC-sdc11720-optimized.jpg  
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  #106  
Old 09-21-2012, 07:52 AM
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Default Re: Oven Build in SC

the fun begins...i used a ss tube as a heat break, is it effective? Lots of opinions out there, even some tables of thermal transmission of materials, btw ss is not too bad and you have a air channel too. Imho if you have the ss and it fits in well use it. I see a bucket under the wet saw, fresh water supply for pump? If not consider one saves on pump life good luck will be watching
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  #107  
Old 09-21-2012, 08:13 AM
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Default Re: Oven Build in SC

Very nice cuts on your floor. I agree w/ Russell-use the stainless if you like it. It will look good and will provide an adequate heat break. Get that saw in a "handy" place close to oven. You are going to make MANY trips back and forth and create a HUGE mess. It is a blast and a lot of work, but no other oven will be the same as yours.
My water pump on my saw lasted about an hour. I replaced it with a 100 gl./hr pump and kept that new pump in clean water in a bucket and it worked well. Think about what you want to do with all the fireclay you will be creating. Keep some, but you will have around 200# of the stuff i guess. i used a bucket to catch the dirty water from the catch pan and then used a garden hose to drain that to an area away from the kitchen. Lots of mess management in this project and it keeps the Mrs. kinda happy.
Tracy
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  #108  
Old 09-21-2012, 09:08 AM
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Default Re: Oven Build in SC

Thanks Russell and Tracy for your opinion. Yes, I have a bucket for clean water and pump, the bucket underneath was to catch all the firebrick remnants that will also be recycling into my HB mortar. I also had to remove the rubber booty; it's a thick rubber and was interfering with pushing the brick through for the cut. I was surprised at the small amount of dust that was created; I mean I thought I was going to be overwhelmed with it. But it was not that bad.
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  #109  
Old 09-21-2012, 10:21 AM
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Default Re: Oven Build in SC

Congrats on getting started with the cutting. I remember that being quite a good feeling. Now just wait until you start mortaring!

To your heatbreak question - I did something similar in my oven. I used a piece of 0.75" x 1.5" stainless tube, set on insulated firebrick to bring it to the oven height. You can see it here behind the soapstone. I ran the IFB all the way under the soapstone in order to get it up to level and provide less opportunity for heat transfer from the oven to the landing
Oven Build in SC-wp_000089-1-.jpg
I think the piece that you have will work fine - but you should fill it with CF Blanket or v-crete as you are planning. I left mine empty, but there is some limit to how wide an air-space you can have in a tube before you get a convection effect - which can be worse than having no heat break! There is quite a discussion of this on my thread here (Starting new 36" build), if you are interested.

As for angling the bricks - Personally, I would not. I find they are pretty brittle when cut with small edges and would not want to risk breakage in the long run. Just my $0.02

Dennis
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Last edited by deejayoh; 09-21-2012 at 10:36 AM. Reason: fix hyperlink
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  #110  
Old 09-24-2012, 06:41 AM
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Default Re: Oven Build in SC

I finished cutting the dome floor this weekend. Then I removed the forms I had for the archways and was quite happy (and surprised) that they came out as nice as they did. There were a couple of air bubbles but nothing to bad and this will be veneered over anyway. The curves were nice and smooth. Now the curved landing area is another story, I'll have to do a little grinding to smooth (round) it out a little. Nothing to bad though. I also opened the forms up on the insulating layer and insulating firebrick to get a view of how that turned out and again was quite happy on how it looked. Then I buttoned it back up to keep it protected while I'm working on the dome to prevent any kicking it might receive. I then proceeded to make the opening template for the dome (12.5"H X 20"W). I'm not aware of a particular radius that is supposed to be used for this so I ended up tracing a bucket I had in the garage. Unless someone tells me otherwise I believe it should work.
This afternoon I hope to level out the top of the IFB with some sand and fireclay to start the placement of the dome floor. For some reason I believe this is going to be a PITA, but I hope not.
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