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Post by jonnycj on Apr 15, 2012 14:56:11 GMT
Sorted out the arches using Liam's template. When I look at the amount of work that would go into cutting a taper into the bricks I'm very relieved to have paid the extra for tapered bricks. Apparently the arch can stand without mortar, however, I will be using a 2mm mortar bed to joint the bricks.
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Post by jonnycj on Apr 16, 2012 18:06:36 GMT
Base went on today with the ashhole cut out towards the front. Tomorrow's progress is weather dependent to some extent.
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Post by rivergirl on Apr 16, 2012 19:15:56 GMT
I am really loving that brick work !!!!! cannot wait to see the finished resutls . Fingers crossed for good weather so you can finish it.
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tapir
valid member
Posts: 45
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Post by tapir on Apr 17, 2012 8:17:02 GMT
Base went on today with the ashhole cut out towards the front. I read that SO wrong ;D
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Post by jonnycj on Apr 17, 2012 18:06:48 GMT
There have been a number of ashhole jokes over the last couple of weeks. I think they may give us as much joy as the oven itself ! Getting old is compulsory, growing up is optional. Anyway - things raced along today.. The famous ashhole First arch going up - cal sil makes a great former, especially with well cut bricks ! Still under wraps Very glad I also had sufficient "square" bricks to lay them side on rather than flat. Should give me much greater thermal mass. Tomorrow should see the brickwork finished and then it's on with the fire blanket, foil, chicken wire and render. Can't wait !
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Post by tonyb on Apr 18, 2012 8:50:06 GMT
Have you thought about how you are going to get the calsil former out from under the arch? Could be difficult, particularly if the bricks aren't perfectly level? The standard way fo doing this is to prop the former on a couple of spacers, then when you remove the spacer it makes it easier to remove the former. putting a handle on the former would also simplify things.
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Post by jonnycj on Apr 18, 2012 18:16:15 GMT
Good point Tony - will mention it to Brian
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Post by tonyb on Apr 19, 2012 17:07:40 GMT
Easiest solution would be to cut say a 25mm slice off the bottom of the former and stand on a couple of 25mm wood offcuts or something similar.
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Post by bookemdanno on Apr 21, 2012 15:49:35 GMT
there doesn't look any space for insulation between this first arch and the garden wall? I could maybe understand the Calsil staying in place to act as a back wall, but not a insulation gap.
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Post by jonnycj on Apr 21, 2012 18:56:42 GMT
Carried on today - Brian's been on other things. Had a problem with the arch not meeting at the top, we'd been using the dimensions provided by Liam at kilnlinings, however a quick phone call to him and we realised the dims are only a guide and we should let the arch form itself naturally ! Taking this latter approach, the arch went up fine after laying it out flat and using the base width dimension to start things off. The cal sil former was dispensed with in favour of an ad hoc system. Once the first arch was up following it with the second is easy. I've actually discovered that the second arch can go up without any formwork! I used a paint striping hot air gun to partially set the cement and the bricks stay up by themselves. Makes life much much easier and by getting a partial set there's room for adjustment with a rubber mallet. Once I removed the form work for the first arch I put the cal sil in the back to provide a layer of insulation from the back wall and the thin gap between the fire bricks and wall shown above will be filled with fire blanket. I'm putting thin fire bricks as a facing on top for the cal sil, so looking from outside in you'll just see firebricks. More pics tomorrow hopefully !
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Post by jonnycj on Apr 22, 2012 16:23:47 GMT
Good progress today - more piccies to follow
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Post by jonnycj on Apr 23, 2012 19:35:44 GMT
All arches now fully up ! The following piccy shows things shortly before the keystone went in. Decided to go with the stainless steel chimney flue in the end. The weight of the clay one was causing me some angst, so Brian and I decided to cut out the flue hole slightly smaller than the flu diameter and cut a channel in the blocks for the stainless pipe to sit in. Had a test firing today and got the cement set, so all should be rock solid. Going to do a bit more firing this week as well so that all is perfectly cured. There are some bigger than hoped for joints, but these are between arches rather than between bricks, which are all pretty much 1-2mm. Height ratio isn't ideal at the moment, so going to build in a lower top lip over the next couple of days.
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Post by bookemdanno on Apr 25, 2012 12:41:33 GMT
Tidy work! Nice One! Those cut bricks certainly look a fine way to go, with those tight joints...a work of art! Reminds me of victorian gauged brick arch lintels.
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Post by veauifru on Apr 25, 2012 13:29:13 GMT
Looking good if I may say so
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Post by cannyfradock on Apr 25, 2012 14:02:29 GMT
This is the first time I've seen one of these types of ovens being built....looks impressive.
I like the idea at the rear of the oven.
Terry
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