First time oven build

[Megapulse]

Finally after years of wanting one I get around to building my very own Wood fired oven, i have decided to go with cast mainly because of the time /effort and cost of using firebrick. I have the base up and am about to install the fire board and firebrick hearth. The floor measurement is going to be 120cm
here are photos of the build so far

[nissanneill]

Re: First time oven build

Great to see another Aussie on board giving it a go.
Welcome aboard and I hope you get what you plan on. Building with brick is not that difficult and you don't necessarily need to use firebricks

Cheers.

Neill

[cobblerdave]

Re: First time oven build

Gudday Megapulse

Welcome aboard ....so its to be a cast oven! love the base plenty of wood bays easy to axcess.

Regards Dave

[OscarA]

Re: First time oven build

Very impressive stand, keep us updated with the build.

[Megapulse]

Re: First time oven build

Hi fellow Pizzaioli, here is an update to my build, I have formed the dome and started on the entrance formwork. next will be the dome cast, any suggestions as to what i can add to the ciment fondue and crusher dust mix to make it less prone to cracking?
Cobbler dave suggested stainless steel needles????

[david s]

Re: First time oven build

Stainless steel fibres add 2% by weight. Try Antec Engineering. The real name is melt extract fibres.

[Megapulse]

Re: First time oven build

hi Guys these are the latest images of the progress[ATTACH][ATTACH][ATTACH][ATTACH][ATTACH][/ATTACH][/ATTACH][/ATTACH][/ATTACH][/ATTACH]

[david s]

Re: First time oven build

How thick did you make the dome?

[Megapulse]

Re: First time oven build

I have not cast the dome yet. what you see is the sand and plasterboard mould.
I will make the dome 4 inch thick then 3 inch of insulation then 3 inch of perlite then 1 inch of render then tiles

[Megapulse]

Re: First time oven build

I am using fire board below the hearth and fire blanket insulation around the dome

[Megapulse]

Re: First time oven build

Hi All, I have now cast the dome 115mm thick

[ATTACH]27492
here is the pic

[david s]

Re: First time oven build

That is a pretty thick dome for a casting and it will take ages to dry. don't attempt to fire it for two or three weeks, so the weather can dry it for you. Water trapped in the middle of the walls will blow them apart if it turns to steam suddenly.Follow the manufacturers recommendations for initial firing, nothing more than 25 C increase / Hr from memory.It varies depending on the thickness. Presuamably you didn't add fibres to assist with the water elimination so you must take it really easy, otherwise you are bound to get cracking or blowing ( oops, I see it's cracked already. Plug it up with some more of your mix.

[cobblerdave]

Re: First time oven build

megapulse
i have been looking at the photos
have you recessed the fb board into the slab?

regards dave

[Megapulse]

Re: First time oven build

Hi friends
Yes the fire board is recessed
The crack is not a crack but a cut which I made in both directions approx 50 mm deep. Thanks for the tip I am emptying it today of the sand.

[Megapulse]

Re: First time oven build

Ok friends we have an oven, next the fire blanket andy chimney