| 摘要 |
A hole saw for cutting standardized holes in the web portion of an I-joist features a light weight saw body having a flywheel configuration and preferably three inserted cutting blades fixed within clamp cavities in an offset to the circumference, which is dimensioned in accordance to standard web heights. The flywheel configuration provides for smooth operation at high rotational speeds in combination with intermittent actuation of the circumferentially arrayed cutting blades.
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