Bricks
Bricks
pedant
Joined: Jan 2008
Posts: 23,576
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From: EXTREME southwest CT
To the best of my knowledge....
Clay bricks were first formed in molds, individually. These are typically recessed on one or both sides (top and bottom) to form a locking mortar pocket. Often with the brick makers name embossed in this recess.
Bricks were later wire cut from a large slab of clay and these had no recess but were far more efficient to produce. Wire cut is still used for the decorative surface texture it produces. (striations)
Many bricks are now extruded. Think 'Play dough', pumped or pressed through a die. It's easy to make 3 or more holes in the middle that not only help lock it in place but also help in evenly drying and firing the clay in the kiln.
A real mason could probably better answer your question but I think that's the gist of it.
Clay bricks were first formed in molds, individually. These are typically recessed on one or both sides (top and bottom) to form a locking mortar pocket. Often with the brick makers name embossed in this recess.
Bricks were later wire cut from a large slab of clay and these had no recess but were far more efficient to produce. Wire cut is still used for the decorative surface texture it produces. (striations)
Many bricks are now extruded. Think 'Play dough', pumped or pressed through a die. It's easy to make 3 or more holes in the middle that not only help lock it in place but also help in evenly drying and firing the clay in the kiln.
A real mason could probably better answer your question but I think that's the gist of it.
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