Oven Door Whoopsy

[nick]

Hi All

I had an oven door made out of 3" x 3" pine with a steel plate facing on the oven side and a temperature gauge through the middle

Last week I had two pizza nights, and then on Saturday I had family over, so I gave the oven a good heating for about 4 hours, all went well on the evening, when the fire died down, I put the oven door on as usual. It registered 375 degrees C.

The next day I planned on a nice roast chicken, so in the morning I duly oiled, herbed, salt and peppered the bird and took it to the oven, but when I got there, all there was in the doorway was a pile of smouldering ash dispersed with a number of screws, a piece of steel, and a shattered temp gauge.

At what temperature does wood self ignite?

So now I am looking at oven designs, and materials that don't include wood

I have a nice piece of 3" cal sil board that will sit inside the door I build.

So now, which is best a "plug" door which fits inside the hole of the doorway or a flush fitting door which presses against the doorway

Also, which metal is best, I would rather not spend a fortune on stainless, just to find it warps and wont seal properly, and have to start again.

Cheers All

Nick

[tonyb]

According to this site, the autoignition temperature of wood is 300C

www.engineeringtoolbox.com/fuels-ignition-temperatures-d_171.html

I used 25mm Calsil board equivalent sandwiched between 2x3mm mild steel plates. The inner plate was cut slightly smaller than the outer plate such the it fitted both inside the door with the outer sheet resting on the front of the brick hope that makes sense.

The above design is a little more complicated than a flush fit door and I was lucky that I had a mate who could cut the plate to spec. If you go with a flush fitting door you could use insulating rope to give a good thermal seal

[nick]

Hi

I was thinking of that type myself, it just means a bit more work

Another idea is to combine both types of doors and make a "double door".....even more work

Would aluminum do the job, or would the inner part have to be steel?

I'll have to think some more on that one

Cheers for the reply

Nick