| 摘要 |
A blade 7 for a cutting tool, has a tapered cutting portion 7a having opposed tapering cutting edges 7f,7g terminating at an apex 61 of the blade. The blade is configured such that: (i) at least one of the tapering cutting edges 7f,7g has a cutting edge bevel defining an angle of substantially 40 degrees or less; and/or (ii) both opposed tapering cutting edges 7f,7g have a cutting edge bevel; and/or (iii) at least one of the tapering cutting edges 7f,7g has a cutting edge bevel on upper and lower portions of the blade defining a double bevel. The blade 7 may be flat or may be bent to a right angle such that the fixing portion 7b and cutting portion 7a are perpendicular to each other.
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