Mongo's 42" CT Build

[NewEnglandNewb]

Thanks for the reply mongota. There is a distribution international in Sharon mass. I’ll be close to that over April break doing some collage visits with my son, so I’ll just plan on adding a side trip like you did.

[mongota]

NewEnglandNewb
Josh, I had the same difficulty.
I ended up finding a place with very attractive prices on the ceramic fiber board and blanket insulation in New Jersey, it was either in Elizabeth or nearby Elizabeth. Can't recall the name of the place and I just did a few searches to jog the memory but came up empty. I have a half box of blanket insulation remaining, I checked that box and there's no business label on the box. I bought online and picked up in person.
I had to go to JFK airport so I added a side trip to Elizabeth to make the pickup.

[NewEnglandNewb]

Mongo,
Those doors are looking great!

I do have another material question for you. Were you able to buy your under floor insulation locally? I have tried a few local places I thought might carry an appropriate material and have been striking out. The closest place I have found so far is a Boston suburb. I’d rather not go that far if I don’t have to and shipping is real expensive on the places I found online.
thanks,
Josh

[mongota]

Hey Mike!
I'm not certain of the final detail. I have a few ideas, I'll post when done.
Mongo

[SableSprings]

Wow, those doors are stunning and being able to one hand & stand 'em off is fabulous. Any worries about developing a rust stain on the concrete from the angle iron strip?

[UtahBeehiver]

That wood sure finishes up nice. Great job and welcome back.

[mongota]

JRPizza
I'll be adding a small piece of 3/4 x3/4 angle iron to the bottom edge of the doors, all that would be seen from the outside would be the 1/8" thickness of the angle, the upturn of the angle would be on the back or interior side of the door. Cumaru is a pretty tough wood, but the steel angle would act as a wear strip and minimize dings to the wood when I'm moving the doors about. It would also isolate the end grain of the boards from the concrete slab.

[JRPizza]

They certainly came out nice. Part of my procrastination is my patio has a slope that makes water run down towards the oven. If I do make doors out of wood, I have to do something on the bottom to keep the water from damaging them. Not an insurmountable problem - I just have not come up with a solution I'm happy with yet.

[mongota]

JRPizza
Thanks JR. I had been needing new doors for a few years, this was an easy way to use some of the offcuts from when I built the cumaru fence.

[JRPizza]

Nice doors Mongo! I keep wanting to make some for my wood storage area but have not found the time - maybe I can use yours as inspiration!

[mongota]

Door handles. Old doors had metal handles, I did the same on these. Happened to see these handles on a walk through the hardware aisle at a box store when I was picking up drawer slides for another project. I like the size of them as well as the aesthetic. All three doors are easily lifted with one hand, and the doors hang withing 10-15 degrees of vertical. That makes them easy to remove, place on the ground, lift up, and replace in the openings single-handed.

[mongota]

Got the two other replacement doors for the wood access openings done today.

Doors are about 24" wide and 26" high.



Dry fit, using a twig to wedge it in place.



Ipe oiled up and put to bed for the night.

[mongota]

I hope everyone is well!

I put up a cumaru horizontal board fence and intentionally bought way to much cumaru, my plan was to use the excess for future projects. Here's one of them. Time for new doors for the WFO. One for the outer oven opening and two for the wood storage below.

Cobbled this together yesterday from some of the drops left over after the fence was done. Gave it a coat of Ipe oil and let it sit. For this one, I'll add a sheet metal shield to the back side, the cumaru cleats on the back will provide a gap between the wood and metal. Once all three doors are done I'll fashion door handles. No thought went into this to make it amazing. The thought was to get it done. And I'm happy with it.

I might consider cutting the radius down an inch or two so there's a bit of space between the wood and the cast arch. I'll wait to get the wood storage doors done before deciding.

[david s]

Even with the gallery well insulated some of its heat can be lost via the uninsulated face and sides that lead to the flue. Reducing the conduction between it and the inner dome with your rope separation should further slow heat transfer. Another method is to use a lightweight gallery which reduces the heat sink effect by lowering its thermal mass.

[mongota]

Toiletman
No worries, sorry for the late reply.

The two runs of rope, not required. When I went rope shopping I found a length...forget how long. But it was the perfect length (10', maybe 12'?), just long enough for two runs of CF rope, so I did two. One would certainly be sufficient.

The notches in the brick? The "L" shape satisfies coverage on the face and side of the arch, but I didn't want a large gap showing on the face of the oven where the two arches meet. So some modification to the arch brick was needed to provide for a 1/2" gap for the rope to fit into that would also allow for the dome and landing arch bricks to appear fairly tight to one another. You can detail that however you choose. You don't need the "L" cutout. But I do think it nice that the landing arch and the dome arch pretty much butt against each other for a clean look, while the gap behind then is full of CF rope.

I will say that using the wet saw coupled with the diamond blade on the angle grinder, these cuts were all quick and easy. Not fussy. The diamond blade will waste the brick away quite nicely.

There is plenty of room for simplification, and your proposal is logical and makes perfect sense. I think one run of rope is enough. All you really need is one run of rope and that's it. Honestly, you don't even need a run of rope. I think it logical to separate the landing arch from the dome and to consider them two separate structures that simply 'kiss' one another where the dome arch meets the landing arch.

I have several inches of CF blanket insulation on top of the dome and landing arch, so they are insulated, and there will always be someone who will make the argument that the blanket insulation makes the CF rope superfluous. In the end, I wrangled my way through the build trying to do my best. Sometimes "best" is more work and money than required and doesn't add value. But I can say that years after building, my oven is still a champ, so I'm satisfied with my decisions.

It's good you're reading through threads. See what people do, take some tidbits, toss others to the side. We all find our own way based on our own build parameters. Any other questions, ask away!

Best, Mongo

EDIT TO ADD: It was a 10' length of 1/2" CF rope that gave enough for two runs of rope.