 Re: Launching area, vent and chimney.
Dmun:
Those are normal red bricks, not refractory ones.
We do not expect to storage temperature along the vent area and chimney.
The normal bricks could work with high temperatures without damage.
I use to fill a temperature spreadsheet of sensible parts of the oven (hearth, dome, isolation and so on). At the moment when the fire is roaring and has big flames, the temperature in the chimney entry goes higher than 1000°F. This temperature never had affected the entry brick appearance.
The normal rectangular bricks are easily worked with a combination of gross (to devastate) and fine (to finishing) sandpaper, when wet.
There is a little effort to round a corner if the brick is well embedded.
If you could see in the last picture or in older pictures of the finished oven in another thread, you could notice that all the corners of the walls of the oven ‘table’ are rounded. This work take me not more that a half an hour.
Luis |