Как засунуть кирпич в штрабу, чтобы не ослабить кладку. Master makes a window

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How to put a brick in a groove without weakening the masonry.
A mason is building a window opening in a house. To fit a brick into a hole without weakening the brickwork, he shows how to fill the hole in the brick with mortar. After the craftsman has laid the brick, he compacts and smoothes the mortar joint.