38" build in Slovenia

[Gulf]

Re: 38" build in Slovenia

I think that I used a poor description referring to the entry as a "tunnel". I think that now, since you responded with the term "straight tunnel". You stated "I do not like straight tunnel as I need a lip to anchor outer door to prevent weather getting in." I used face brick on my ouitside arch to form that lip for the exterior weather door. Others have used reinforced stucco to do the same.
You did a pretty good drawing of your first plan. Could you post a drawing of your new plan? I am not understanding all of what I read, as I am sure that you are not understanding all that I post. Every thing that I see that you have done so far, looks great! I just want to make sure that I have not confused you on the rest .

Joe

[gorazdr]

Re: 38" build in Slovenia

I changed my design on bottom parts of the arch to minimize stress in area marked with green arrow. I turned full bricks vertical to maximize strength after cutting clearance slots.

Here is my revised plan.


Gorazd

[gorazdr]

Front arch

Yesterday I started building front arch.



Midday it was to hot for my mortar (it went in 4 minutes) so I was a bit behind on my schedule.

Today I finished it.


Almost there

[gorazdr]

Thermal break

Here are some detailed pictures of thermal break.



What should I put beneath the stainless U bar on the floor break?
a) nothing
b) vermiculit
c) perlit
d) leica balls
e) something else

Gorazd

[Gulf]

Re: 38" build in Slovenia

Great looking entry! It should draw real well. Again, it is an interesting design. I am looking forward to hear how it performs. After packing the heatbreak, and giving it some support with the vcrete and reinforced stucco, the entry should serve you well. I am guessing, that you will be making the reveal for your weather door out of vcrete and stucco?

[gorazdr]

Re: 38" build in Slovenia

Thanks Gulf. I removed forms after only 20 hours of drying and it was ok. Over that I will render with perlite stucco with added reinforcement fibers (commercial product) 1" thick followed by acrilic/silicate stucco or gress tiles, haven't decided yet.

I will be packing heatbreaks with ceramic rope and hi-temp caulking, but I do not know what to put under floor heatbreak?

Weather door will be inset into entry so no extra reveal. I will do that in autumn months before first snow.

Weather forecast is 3 days of rain after that I will start curing the oven.
My plan:
- 3 days of 500W reflector on timer(cycling temp) or until there is moisture under tarp.
- gas burner 5kW until oven reaches 150 deg celsius

- insulate the dome with 6"-8" of rockwool (660 C / 1220F)
- add reinforced concrete with vermiculite added to lower weight 1"
- dry for 1 week
- add lime/cement stucco 5-10mm
- dry for 2 days
- add silicate stucco
- dry for 1 day

and then fire this baby

So I can report how it is drawing smoke in about 3-4 weeks.

Gorazd
-

[Gulf]

Re: 38" build in Slovenia

I've never worked with the stucco with the fibers. I have heard some good recommedations for it from this site. I'm an antique so I used the mesh. Are you still applying the stucco over 2" of vermicrete?

I did not use the ss channel for a heatbreak. I just separated the oven floor brick from the entry brick with ceramic fiber tape. Maybe someone who used the ss steel will answer that for you .

[gorazdr]

Dome insulation

After curing the oven with light bulb and gas burner I covered the dome with insulation. I used two layers of 4cm (1.6") rockwool over the entire dome with extra 4cm layer over the top. In the pictures you can probably see that I also covered front entry with fiber reinforced perlite.

I then covered the rockwool with thin layer of ceramic tile glue. I did this because I would like to minimize water from vermicrite layer seeping into rockwool. I did not see anyone elso do that but I thought it made sense.

Here are some pictures:


Gorazd

[gorazdr]

First fire

After the insulation was on it was time for first fire.

I tried to keep flames low. Top of the dome peaked at 310C/590F and the floor at 220C/428F but that was for only short period of time. After about three hours I let the flame go out. With only embers the temps went down to 250C/482F on top and 190C/374f on the floor.

Flue was drawing well when the flames were high but there was some smoke when the flames were low. Flue temp was at max 90C/194F.




Gorazd

[gorazdr]

First goodies

With only embers left I tried some cooking/baking. I planned to bake cherry pie but I got hungry so I threw in also some chicken and potatoes. Embers cooled down so I was a bit sceptical but after an hour and 15 minutes I got the best chicken I ever tested. The pie was also very good even on top and bottom.

Whoau I got hungry again must go and east some more pie.

[stonecutter]

Re: Dome insulation

I then covered the rockwool with thin layer of ceramic tile glue. I did this because I would like to minimize water from vermicrite layer seeping into rockwool. I did not see anyone elso do that but I thought it made sense.

Something that has been recommended many times is using ceramic rigidizer or a Portland/acrylic slurry over insulation for just that purpose. Hope it worked out for you.

[gorazdr]

Re: 38" build in Slovenia

Thanks Stonecutter for your confirmation.

[Archena]

Re: 38" build in Slovenia

Pie!!!!!!!!!!!!!

[gorazdr]

Re: 38" build in Slovenia

Hi,

I finished my insulating layers. I added 2" of perlite concrete (fiber reinforced over 6mm steel rebar). Now i have a bit of dilema. Do I need concrete over that or would stucco be enough? My concern is snow or weight of it. (we can get max 1m or 3 feet)

Thanks

[Archena]

Re: 38" build in Slovenia

Hi,

I finished my insulating layers. I added 2" of perlite concrete (fiber reinforced over 6mm steel rebar). Now i have a bit of dilema. Do I need concrete over that or would stucco be enough? My concern is snow or weight of it. (we can get max 1m or 3 feet)

Thanks

People have done it both ways. I would think the snow would break the stucco if it wasn't reinforced but I'm just guessing - wait for one of the other guys to weigh in.