| 摘要 |
A radial arm of a radial arm saw comprises a lightweight metal casting of inverted U cross-section and having opposing longitudinal grooves in the inner faces of the side walls of the inverted U. A metal strip of resilient arcuate cross-section is press fitted into each groove to form guides for supporting and guiding a power saw unit movable along the radial arm. The lighter weight of the radial arm is particularly advantageous for a portable radial arm saw, and the inserted metal strips form inexpensive durable guides.
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