Cutter

A cutter formed by detachably attaching a replaceable blade to a cutter body, wherein

• the replaceable blade has flexibility in a thickness direction,
• the cutter body is composed of a main body block and a slide block retained in the main body block so as to be able to move in a longitudinal direction of the cutter,
• the main body block includes a main body supporting section that supports a back face of the replaceable blade, and a main body connecting section that connects with the replaceable blade from a front face side,
• the slide block includes a rear-side supporting section that supports the back face of the replaceable blade at a farther rear side from the main body supporting section, a slide connecting section that connects with the replaceable blade so as to retract the replaceable blade toward the rear side, and a back side protruding section that protrudes on a back side in the thickness direction, and
• in an attached state in which the replaceable blade is attached to the cutter body, the replaceable blade is elastically deformed to curve in the thickness direction, the slide block is pressed toward the back side in the thickness direction by an elastic force of the replaceable blade, and the back side protruding section is engaged with an engaged section provided in the main body block.