Cutting apparatus cutting for sheets of paper, plastic or the like, has a carriage (12) for sliding along a rail, a cassette holder (11) engageable with the carriage (12), and a cassette (10) encasing a cutting blade (14) and cooperable with the carriage (12) when held by the cassette holder (11) to expose a cutting edge of the cutting blade (14) during closing engagement of the cassette holder (11) with the carriage (12). The cassette (10) may be provided separately, which has a rotary cutting blade (14) and a cover (28/29) covering the blade (14). |