| 摘要 |
A trowel machine has replaceable blades. In a preferred embodiment, the blade can be replaced separately from its backing bar, and the same fasteners that secure the blade to the backing bar also secure the blade to the trowel arm of the machine. In a preferred embodiment, the blade is deformed in the area of the mounting holes, providing a clamping surface recessed from the working surface of the blade to provide retention of the blade on the trowel machine.
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