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  #1  
Old 05-17-2014, 03:33 PM
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Join Date: May 2014
Location: in the oven
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Default 100 cm oven build, Sweden

Hello people! Today was the day that I started laying the bricks. So far so good.

I started with a soldier course and the IT is made so I can reduce the height of the dome to 45 cm.

I started of course with the floor and marked all bricks with permanent marker, I really hope that it will burn away with time.

The whole thing is situated on an old stone wall that I leveled nicely. For insulation I started with 8 cm of leca balls mixed with portland cement and topped it with 2 cm vermicrete, if I build a second oven (I sure will), then I will try to find a suitable board because my solution didn't really save any money and it took lots of time.

I'm cutting the bricks perfectly well with a mitre saw and an inexpensive diamond blade from ebay. For complicated cuts I'm using an angle grinder.

Most of the material is salvaged scrap, the only problem with the red dome bricks is that I've had to clean them.

If the weather stays nice tomorrow and nothing weird happens I should be able to get some way up the dome.
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100 cm oven build, Sweden-dsc08447.jpg  
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Old 05-17-2014, 03:38 PM
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Default Re: 100 cm oven build, Sweden

Not sure how to put more than 6 pics in one post so here comes the rest. The last one is a bonus and shows a smoker we built this christmas for lamb shanks and other.
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100 cm oven build, Sweden-dsc08448.jpg   100 cm oven build, Sweden-dsc08454.jpg   100 cm oven build, Sweden-dsc08455.jpg   100 cm oven build, Sweden-dsc08478.jpg   100 cm oven build, Sweden-r-ken.jpg  

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Old 05-18-2014, 04:44 AM
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Default Re: 100 cm oven build, Sweden

G'day
Your making great progress.
Couple of questions what are leca balls?
Are you using firebrick as the hearth brick? As you have said your using red commons for the dome but the hearth is a different colour from the pics of the red brick.

Regards dave
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Old 05-18-2014, 06:08 AM
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Default Re: 100 cm oven build, Sweden

Hello,
LECA is short for Light Expanded Clay Aggregate, they are as the name says, light and made from expanded clay.
The hearth-bricks are "medium duty" yellow firebrick, the dome is low duty red firebrick, they come from an old chimney and some of them are really toasted but still intact and rock hard, so I have full confidence in them.
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Old 05-18-2014, 08:08 AM
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Default Re: 100 cm oven build, Sweden

I am interest to see how the LECA ball work, at least from the 10,000 foot level they seem to be similar to Vermiculite or Perlite which are expanded shale rock. It would seem that the LECAs would have more compressive strength. IMHO. Out of the box thinking is good.
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Old 05-18-2014, 01:14 PM
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Default Re: 100 cm oven build, Sweden

Quote:
Originally Posted by UtahBeehiver View Post
I am interest to see how the LECA ball work, at least from the 10,000 foot level they seem to be similar to Vermiculite or Perlite which are expanded shale rock. It would seem that the LECAs would have more compressive strength. IMHO. Out of the box thinking is good.
I think they will do fine, there's 10 cm of them so insulation should be up to standard and compressive strength is great, houses are built on top of blocks of these.

Today was rainy here so could'nt get too much work done.

Instead of wood wedges I'm using cut of pieces of brick that will stay there until it's all cured and then be cut of. (2nd pic)

I had a go with the angle grinder on the arch to smooth some edges out.

Will continue tomorrow.
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100 cm oven build, Sweden-dsc08482.jpg   100 cm oven build, Sweden-dsc08483.jpg   100 cm oven build, Sweden-dsc08485.jpg  
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Old 05-19-2014, 02:32 PM
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Default Re: 100 cm oven build, Sweden

Torrential rain today, no good for mortaring.
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Old 05-20-2014, 01:34 PM
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Default Re: 100 cm oven build, Sweden

Getting on with the 4th course. Things are not lining up horizontally, I must start to think in 3 dimensions.
To have the pivot point 4 cm up from the bottom as my IT has isn't any good for anyone who tries to make a lower dome than it is wide.
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Old 05-24-2014, 03:07 PM
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Default Re: 100 cm oven build, Sweden

Got the 5th layer laid today, the towel in the pic is a try to keep the mortar from drying out in the sun.
Also got a new blade from ebay. This one is segmented and cuts so much faster than the smooth edged one.
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Last edited by ugnsnisse; 05-24-2014 at 03:15 PM.
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Old 05-26-2014, 01:22 PM
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Default Re: 100 cm oven build, Sweden

The arch-dome transitioning is working out nice. Next course will probably be the last before the gym-ball enters the dome. I will also cut the bricks in thirds for the remaining dome, or maybe I'll wait one more course.

Is it a good idea to mortar the joint between inner arch and landing/vent-arch?
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