New 36inch castable build in Brisbane

[cobblerdave]

Re: New 36inch castable build in Brisbane

Gudday
Seriously now Brissie ... all jokes aside .. You have done your self a great oven... And not rushed the "cure" you'll be fine, I'm sure
Regards dave

[cobblerdave]

Re: New 36inch castable build in Brisbane

Hey Dave

is his name "Draft Door"

Gudday
No it's actually 2 stoke .... But that's not important
Regards dave

[oasiscdm]

Re: New 36inch castable build in Brisbane

Hey Dave

is his name "Draft Door"

[cobblerdave]

Re: New 36inch castable build in Brisbane

Gudday Steve

Well if it gets wet and hard to light .....don't do this
Regards Dave
No this is not me or my oven, but I was involved and we did feed 20 odd people that day rain or no rainyes the oven survived!somehow

[brissie]

Re: New 36inch castable build in Brisbane

Thanks everyone for the support.

It looks like in the new year I will add a new feature - Expansion joint(s). I will let the oven settle in a few months first.

Cheers,

Steve

[cobblerdave]

Re: New 36inch castable build in Brisbane

Hey Dave don't they call that an expansion joint

Gudday not at all. An Expansion joint is the two that live at both edges of the oven entrance. You can't find them cold. But they are there when the doors on and ovens hot. The entrance is angle iron and they start there and climb up the mortar joints into the chimney. Haven't cracked a brick or gone into the oven so we get along real fine.
Regards dave

[Lancer]

Re: New 36inch castable build in Brisbane

Hey Dave don't they call that an expansion joint

No, heck no! Its a crack in a certain light...

In the days of old when brave men set out on wooden sailing ships they always brought along an optimist for just this purpose...because he is usually right. :b:

[oasiscdm]

Re: New 36inch castable build in Brisbane

Hey Dave don't they call that an expansion joint

[cobblerdave]

Re: New 36inch castable build in Brisbane

Gudday Steve
Hairline cracks in the render don't count for anything. Chase them out with a screwdriver, fill with paintable silastic and paint over it. I had a couple radiating from the chimney I treated them like that and they never came back
Regards dave

[brissie]

Re: New 36inch castable build in Brisbane

Thanks lancer, I agree the crack is a minimal issue. At least I get to cook a turkey and ham in the oven for Christmas. I will post some photos for sure.

Cheers,

Steve

[Lancer]

Re: New 36inch castable build in Brisbane

I must say it cooks really well. had to stop cooking to finish the render and some other bits and pieces. I will be cooking for Xmas, and have most of it completed.

Cheers,

Cooking for Christmas! Now that's the life. If I'm cooking for my birthday in April I'll be lucky. Enjoy the fruits of your labors. I'd say the problem you face is minimal at most, think about it after and bring us a Christmas story!

[brissie]

Re: New 36inch castable build in Brisbane

I would recommend a more calm approach.

Do absolutely nothing with it for now. Fire your oven and use it normally for several months, even a year. If you have days that look like rain, then make sure that the oven is covered so that no moisture can migrate in via any of the hairline cracks. This is probably not the only crack that will show itself.

Putting any sealer of any type into the crack, I think is a pointless move because if steam is an issue, it will find it's way out there or somewhere else.

All cement products will crack to some extent. Normal is not the case with WFO's because of the temperature extremes we work with. The cast core has to expand and contract through the thermal cycles. But your ceramic fiber layer can also act as a cushion.

Mine is different--no ceramic fiber blanket, so when cracking occurs...it is more evident, the initial cracks to my pericrete layer occurred maybe after the first 8 firings, then they settled down.

So, in conclusion--enjoy your oven right now! Don't react, see what happens over a longer period of time. Really, there is nothing you can do right now anyway!

Oven looks great!

Yes, its time to enjoy the oven. I will be cooking Xmas dinner in it. Not much I can do but wait. So will continue to use the oven and see what happens.

Interesting that the hair line is invisable now. The sun is hitting the dome and I have a fire inside. The heat from the sun Is heating the external shell more then the oven.

In a few months I will reassess waterproofing.

[brissie]

Re: New 36inch castable build in Brisbane

I wouldn't use no more gaps, it is for internal use only. Use the acrylic product you used before, it will bond better to itself, but just hold off until you have had several more fires.

Out of interest, do you have a vent to your insulating space?

Yes two, a vent on top of the dome, and the chimney is also vented.

[mikku]

Re: New 36inch castable build in Brisbane

Thanks David s,

I have sealed the domes last render layer. It was probably not a good idea. I will fire it up again. and see how it goes. I have not used Acratex but a clear acrylic sealer. If steam is exiting the crack I will fill the crack with no-more-gaps, and seal it again after several firings.

I would recommend a more calm approach.

Do absolutely nothing with it for now. Fire your oven and use it normally for several months, even a year. If you have days that look like rain, then make sure that the oven is covered so that no moisture can migrate in via any of the hairline cracks. This is probably not the only crack that will show itself.

Putting any sealer of any type into the crack, I think is a pointless move because if steam is an issue, it will find it's way out there or somewhere else.

All cement products will crack to some extent. Normal is not the case with WFO's because of the temperature extremes we work with. The cast core has to expand and contract through the thermal cycles. But your ceramic fiber layer can also act as a cushion.

Mine is different--no ceramic fiber blanket, so when cracking occurs...it is more evident, the initial cracks to my pericrete layer occurred maybe after the first 8 firings, then they settled down.

So, in conclusion--enjoy your oven right now! Don't react, see what happens over a longer period of time. Really, there is nothing you can do right now anyway!

Oven looks great!

[david s]

Re: New 36inch castable build in Brisbane

I wouldn't use no more gaps, it is for internal use only. Use the acrylic product you used before, it will bond better to itself, but just hold off until you have had several more fires.

Out of interest, do you have a vent to your insulating space?