A cutting pen (2) includes a cutting pen main body (45) including a blade (44) projecting from one end, a medium pressing member (61) inserted into the cutting pen main body (45) to be movable in a state in which a cap portion (75) projects from the one end of the cutting pen main body (45), and a knock mechanism (63) configured to change the position of the medium pressing member (61) with respect to the cutting pen main body (45) stepwise by causing the medium pressing member (61) to repetitively reciprocally move with respect to the cutting pen main body (45).
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