| 摘要 |
A hole saw having a tubular cutting portion, a pilot drill bit, an ejection plate disposed within the tubular cutting portion and a compression spring cooperating with the plate further includes a guide structure fixed to the ejection plate and slidingly cooperating with a helical flute of the pilot drill bit. The compression spring and cooperating guide structure provide a combination of linear and rotational ejection of a waste plug from the hole saw. A duel set screw feature facilitates waste plug removal if needed and includes a first set screw frictionally engaged with a flat surface of the drill bit and a second set screw cooperating with a circular groove running about the drill bit.
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