leeb
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Post by leeb on May 4, 2012 23:41:33 GMT
Top Slab done with Rebar and remembered DPC Attachments:
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leeb
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Post by leeb on May 5, 2012 17:24:50 GMT
trying to figure out my layout, have put thermal board down initially got a good deal on 100mm board kiln linings were try to get rid of. However although its better for retaining the heat its too tall for my liking so had to cut them all in half to make them the standard 50mm Attachments:
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Post by turkey on May 5, 2012 19:29:41 GMT
its good you are checking the height before you stick anything down. The earlier you check the final oven floor height the better. :-)
you are rocking through the build there, making some of us look bad lol.
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Post by faz on May 5, 2012 20:49:17 GMT
Yeah I thought I was doing well with my build but you're racing ahead - nice work!!
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leeb
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Post by leeb on May 5, 2012 22:14:01 GMT
thanks guys but I think my work is about to slow down, I've only ordered fire cement and not any fire clay/lime for a home brew mix. Didn't realize that f/cement was only for gaps of less than 5mm reading older posts. Also f/cement is probably no good for bedding down the floor I'm guessing does anyone please know if there another mix I can use for the floor or will fire cement work ?
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Post by pete123 on May 5, 2012 23:12:23 GMT
I'm at a similar stage so I'll be keeping a close eye on yours.
When you put your damp proof on did you sandwich it between cement? Or did you just lay it dry on top of the blocks and cast the slab on top of it? Do you know if it matters?
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leeb
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Post by leeb on May 6, 2012 10:53:13 GMT
I laid mine on the blocks then put ply done then put another layer over all the ply then the concrete on that, probably wont make any difference but I still had some left over so thought I might as well use it.
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Post by faz on May 6, 2012 11:05:01 GMT
I can't imagine that it matters too much, as long as it covers the whole area so that there is no opportunity for water to wick through in one place.
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Post by cannyfradock on May 6, 2012 11:21:50 GMT
Lee
I've never used cal-cil board so can't really give first-hand advice. I have heard of people laying fire bbricks dry on these boards. The only problem with this is that although the fire-bricks look perfectly square.....they're not so if you go down this route you may have to grind down any edges of the brick that stick up with an angle grinder so as the pizza peel doesn't catch.
Depending on what dome you are building you will more than likely need to use the homebrew mix. Lime you can get from builders merchants. Powdered fire-clay can also be bought (sometimes) from pottery workshops. Jewsons can also get it but it needs to be ordered. (we get 50% off Jewson price list for refractory materials using the forum's discount account)
Keep posting .....maybe someone has been in this situation before.
Terry
p.s.....don't forget....forums are usually quiet on weekends.
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leeb
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Post by leeb on May 6, 2012 12:13:24 GMT
Yeah really gutted obviously wanted to get stuck into it this bank holiday Rented a block cutter as well but nowhere with clay down my neck of the woods
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Post by cannyfradock on May 6, 2012 12:22:38 GMT
Lee
What's your general location or county (don't post your address) I may know of someone in that area.
You could always try our "buy and sell" (it's a long shot) section. There's already someone on there selling a bag of powdered fire-clay.
Terry
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tapir
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Post by tapir on May 6, 2012 14:54:07 GMT
Yeah really gutted obviously wanted to get stuck into it this bank holiday Rented a block cutter as well but nowhere with clay down my neck of the woods Leeb - I bought my fireclay from Castree Kilns - I didn't use Liam as I would have been saddled with a massive postage bill + extra to make up the minimum order amount. I bought 2 x25Kg packs, it came to around £40 delivered - I think.
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leeb
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Post by leeb on May 6, 2012 18:03:36 GMT
Thanks guys I'm in the Milton Keynes area If not I'll try that contact
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Post by turkey on May 6, 2012 20:18:55 GMT
The reason people use the fireclay to lay the floor is that it will not set rock solid so a broken brick can always be replaced later on. So you can replicate this with any non permanent fixing that can take the heat. If you had lime perhaps a very weak mix with sand might be ok, something like 8:1 or more would hopefully be weak enough so you could rip bricks out if needed. If you have decent cutting gear you can cut the blocks with angles so you end up with very small gaps fire cement is great for. This is what perfectionists on forno bravo often strive for. It's more effort but a lovely look when done. Even if you just do this for the lower levels you can carry on building whilst waiting for fireclay, also from the oven door the lower bricks are much easier to see so pretty work lower down will always be visible
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leeb
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Post by leeb on May 7, 2012 10:20:31 GMT
Thanks for the castree link, there is alot of different clay on there does anyone know which type or roughly how much I'm going to need,I'm going to end up with 70cm Internal oven ?
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