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I think about as year back or so there was a post showing a drawing of the angle of cross cut on a standard firebrick for igloo dome construction.
If I remember right the brick was not cut on a 90 cross cut as normal for cutting your bricks in half. I don't think each brick had both sides angle cut but just one cut to cut the brick in half helped with the way the brick would then need less mortar and kind of fit better. It may have been tappered both sides I cant remember but I think there may have been some thoughts shared on how to precut the bricks a little differently for each course. I am thinking especially for the upper few courses I want to tapper my bricks this time.
A second thing I will throw out as an idea wondering if anyone has thought of something similar to try is making up a special jig to lay the top 3 courses totally seperate from the rest of the dome. Calculate the circumfrance needed from the last course standing on oven before you build this and then mortar it in place as one heavy lid. Last time I did a castable lid and it was ok but may want to try this idea instead. What do people think of this idea....wayne
If I remember right the brick was not cut on a 90 cross cut as normal for cutting your bricks in half. I don't think each brick had both sides angle cut but just one cut to cut the brick in half helped with the way the brick would then need less mortar and kind of fit better. It may have been tappered both sides I cant remember but I think there may have been some thoughts shared on how to precut the bricks a little differently for each course. I am thinking especially for the upper few courses I want to tapper my bricks this time.
A second thing I will throw out as an idea wondering if anyone has thought of something similar to try is making up a special jig to lay the top 3 courses totally seperate from the rest of the dome. Calculate the circumfrance needed from the last course standing on oven before you build this and then mortar it in place as one heavy lid. Last time I did a castable lid and it was ok but may want to try this idea instead. What do people think of this idea....wayne
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