I can't stop watching this because I don't really understand why it has to leave the two bricks open. I am not a smart man.
Because of the shuffle the machine has to do at the end. It places the tile a little further out then pulls it backwards to fit it snugly against the previous row. If those two bricks were in place, it would have to drop the tile in the exact correct spot, which is both too fine of a movement, and wouldn't get it snug against the row behind it.I can't stop watching this because I don't really understand why it has to leave the two bricks open. I am not a smart man.
Because of the shuffle the machine has to do at the end. It places the tile a little further out then pulls it backwards to fit it snugly against the previous row. If those two bricks were in place, it would have to drop the tile in the exact correct spot, which is both too fine of a movement, and wouldn't get it snug against the row behind it.
Also edging. It saves materials to leave the 2 bricks open in the pattern rather than the 3. You only need 1 brick instead of 1 1/2 to finish off the pattern at the borders.
Ain't no one got time for half a brick!