Author Topic: Bluestone heat tolerance?  (Read 490 times)

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Offline peteH

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Bluestone heat tolerance?
« on: October 18, 2013, 06:30:26 AM »
For the front of my oven, I would like to support the bricks across the front with a horizontal piece of 2" thick x 4" wide bluestone.  I would like to use this as the cross member instead of a piece of metal.  Does anyone know the heat tolerance of bluestone, it obviously won't approach oven temps but may get up near 300F.

Offline stonecutter

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Re: Bluestone heat tolerance?
« Reply #1 on: October 29, 2013, 08:13:09 AM »
When you say front of the oven, do you mean the oven opening itself, or the the outer arch.

If you mean for the oven opening, then temps will exceed 300*, and the bluestone will not responds poorly to thermal shock.  A simple brick arch is not difficult, and will provide all the support needed.

Look at a stone cutter hammering away at his rock, perhaps a hundred times without as much as a crack showing in it. Yet at the hundred-and-first blow it will split in two, and I know it was not the last blow that did it, but all that had gone before.
Jacob August Riis