My 3-Legged Dome

[fxpose]

Re: My 3-Legged Dome

I started work on the vent landing area today. I used several insulating bricks to create a thermal break, then poured concrete up to the break. I did not build this up to floor level as I don't yet know what finish material to use for the landing. To keep uniformity, I might 'tile' the landing with sliced firebricks. Same goes for the inner facing vertical insulating bricks. I will use refractory cement to bond the firebricks.

George

[fxpose]

Re: My 3-Legged Dome

I was thinking cutting triangular notches in strategic points on the angle iron. Bend the angle iron on those strategic points til you close the notches and weld them into place.

Thanks Raffy, I envisioned doing that as well. I think it's the best method.

[Raffy]

Re: My 3-Legged Dome

Thanks all!

Hi, the outer opening will be rectangular as well, but will also follow the curvature of the hearth. But I'm not sure yet exactly how I'll 'form' this curvature.....most likely a combination of an angle iron and a flat iron/or rebars bent into shape and welded together. This will also serve as support for the vent.

George

I was thinking cutting triangular notches in strategic points on the angle iron. Bend the angle iron on those strategic points til you close the notches and weld them into place. I hope I'm describing it clearly if not I'll try to draw something up

Not as high as yours Raffy. I'm thinking about 12 feet max.

And thanks for the encouragement!

The metal chimney is 14 feet so you are not too far off But including the brick chimney its just above 16 feet hehehe

[fxpose]

Re: My 3-Legged Dome

Your oven looks to be up against an exterior wall of your house. Am I correct? How high will the chimney have to go to clear the roof?

Not as high as yours Raffy. I'm thinking about 12 feet max.

And thanks for the encouragement!

[Raffy]

Re: My 3-Legged Dome

Oh my lord! I have missed a lot of your build. Great job on the oven, George! All that research paid off and resulted in a record build. Amazing brick work. Very clean and precise. What can I say but get on that vent ASAP so you can start cooking =D

Your oven looks to be up against an exterior wall of your house. Am I correct? How high will the chimney have to go to clear the roof?

[fxpose]

Re: My 3-Legged Dome

Thanks guys!

I need to now think about how I'm going to design the vent area. I need to make it as wide and as deep as possible. I don't want a smokey environment there as that corner is in a nook and not in an open area, and next to a door leading into the kitchen.

I will need lots of napkins for this. Back to the coffee shop....

[lwood]

Re: My 3-Legged Dome

Nice brick work

[ThisOldGarageNJ]

Re: My 3-Legged Dome

congrats........

[fxpose]

Re: My 3-Legged Dome

I mortared the plug. The dome has been capped.

Now I will concentrate my efforts on the landing/vent assembly.

George

[fxpose]

Re: My 3-Legged Dome

Thank you!

Today I carved 3 full bricks to make a large plug.

Checking for fit and the dome will be capped tonight!

Thanks for looking,
George

[Tscarborough]

Re: My 3-Legged Dome

Verra nice!

[eprante]

Re: My 3-Legged Dome

very nice, you are very close now. Pizza soon.
Eric

[fxpose]

Re: My 3-Legged Dome

Last course done! The last 2 courses were laid freehand as my indispensible tool became useless at that angle.

I will cap this 6.5" inner diameter opening with 3 large pieces, adding no additional height to the dome.
My other option was to lay another tight course and drop a keystone but I decided not to do that as that would have added another 1/2" to the dome height which I don't want. Besides, I didn't want to spend another few hours tapering each tiny piece, piece by piece to make them fit.

George

[fxpose]

Re: My 3-Legged Dome

Here's one fun photo before I lose the skylight for good...

[fxpose]

Re: My 3-Legged Dome

Thanks all!

Will the outer arch be an angle iron too or a brick arch?

Hi, the outer opening will be rectangular as well, but will also follow the curvature of the hearth. But I'm not sure yet exactly how I'll 'form' this curvature.....most likely a combination of an angle iron and a flat iron/or rebars bent into shape and welded together. This will also serve as support for the vent.

George